Langlands Company History: Langlands foundry was Melbourne's first foundry and iron shipbuilder established in 1842, only 8 years after the founding of the Victorian colony by two Scottish immigrants, Robert Langlands and Thomas Fulton, who had formed a partnership before emigrating (1813–1859). The business was known as the 'Langlands Foundry Co'. Henry Langlands (1794-1863), left Scotland in 1846 with his wife Christian, née Thoms, and five surviving children to join his brother Robert. By the time he arrived in early January of 1847 the partnership of Robert Langlands and Fulton had dissolved as Fulton had gone off to establish his own works. It was at this time that the two brothers took over ownership of Langlands foundry. Several years later Robert retired and Henry became sole the proprietor. The foundry was originally located on Flinders Lane between King and Spencer streets. Their sole machine tool, when they commenced as a business, was a small slide rest lathe turned by foot. In about 1865 they moved to the south side of the Yarra River, to the Yarra bank near the Spencer Street Bridge and then in about 1886 they moved to Grant Street, South Melbourne. The works employed as many as 350 workers manufacturing a wide range of marine, mining, civil engineering, railway and general manufacturing components including engines and boilers. The foundry prospered despite high wages and the lack of raw materials. It became known for high-quality products that competed successfully with any imported articles. By the time Henry retired, the foundry was one of the largest employers in Victoria and was responsible for casting the first bell and lamp-posts in the colony. The business was carried on by his sons after Henry's death. The company was responsible for fabricating the boiler for the first railway locomotive to operate in Australia, built-in 1854 by Robertson, Martin & Smith for the Melbourne and Hobson's Bay Railway Company. Also in the 1860s, they commenced manufacture of cast iron pipes for the Board of Works, which was then laying the first reticulated water supply system in Melbourne. Langlands was well known for its gold mining equipment, being the first company in Victoria to take up the manufacture of mining machinery, and it played an important role in equipping Victoria's and Australia's first mineral boom in the 1850s and 1860s. Langlands Foundry was an incubator for several engineers including Herbert Austin (1866–1941) who worked as a fitter at Langlands and went on to work on the Wolesely Shearing machine. He also founded the Austin Motor Company in 1905. Around the 1890s Langlands Foundry Co. declined and was bought up by the Austral Otis Co. in about 1893. History for Grimoldi: John Baptist Grimoldi was born in London UK. His Father was Domeneck Grimoldi, who was born in Amsterdam with an Italian Father and Dutch mother. Domeneck was also a scientific instrument maker. John B Grimoldi had served his apprenticeship to his older brother Henry Grimoldi in Brooke Street, Holburn, London and had emigrated from England to Australia to start his own meteorological and scientific instrument makers business at 81 Queens St Melbourne. He operated his business in 1862 until 1883 when it was brought by William Samuel and Charles Frederick, also well known scientific instrument makers who had emigrated to Melbourne in 1875. John Grimoldi became successful and made a number of high quality measuring instruments for the Meteorological Observatory in Melbourne. The barometer was installed at Warrnambool's old jetty and then the Breakwater as part of the Victorian Government's insistence that barometers be placed at all major Victorian ports. This coastal barometer is representative of barometers that were installed through this government scheme that began in 1866. The collecting of meteorological data was an important aspect of the Melbourne Observatory's work from its inception. Just as astronomy had an important practical role to play in navigation, timekeeping and surveying, so the meteorological service provided up to date weather information and forecasts that were essential for shipping and agriculture. As a result, instruments made by the early instrument makers of Australia was of significant importance to the development and safe trading of companies operating during the Victorian colonies early days. The provenance of this artefact is well documented and demonstrates, in particular, the importance of the barometer to the local fishermen and mariners of Warrnambool. This barometer is historically significant for its association with Langlands’ Foundry which pioneered technology in the developing colony by establishing the first ironworks in Melbourne founded in 1842. Also, it is significant for its connection to John B Grimoldi who made the barometer and thermometer housed in the cast iron case. Grimoldi, a successful meteorological and scientific instrument maker, arrived in the colony from England and established his business in 1862 becoming an instrument maker to the Melbourne Observatory. Additional significance is its completeness and for its rarity, as it is believed to be one of only two extant barometers of this type and in 1986 it was moved to Flagstaff Hill Maritime Village as part of its museum collection. Coast Barometer No. 8 is a tall, red painted cast iron pillar containing a vertical combined barometer and thermometer. Half way down in the cast iron framed glass door is a keyhole. Inside is a wooden case containing a mercury barometer at the top with a thermometer attached underneath, each with a separate glass window and a silver coloured metal backing plate. Just below the barometer, on the right-hand side, is a brass disc with a hole for a gauge key in the centre. The barometer has a silvered tin backing plate with a scale, in inches, of "27 to 31" on the right side and includes a Vernier with finer markings, which is set by turning the gauge key. The thermometer has a silvered tin backing plate with a scale on the left side of "30 to 140". Each of the scales has markings showing the units between the numbers.Inscription at the top front of the pillar reads "COAST BAROMETER" Inscribed on the bottom of the pillar is "No 8". and "LANGLANDS BROS & CO ENGINEERS MELBOURNE " The barometer backing plate is inscribed "COAST BAROMETER NO. 8, VICTORIA" and printed on the left of the scale, has "J GRIMOLDI" on the top and left of the scale, inscribed "Maker, MELBOURNE". There is an inscription on the bottom right-hand side of the thermometer scale, just above the 30 mark "FREEZING" Etched into the timber inside the case are the Roman numerals "VIII" (the number 8)flagstaff hill, warrnambool, maritime village, maritime museum, flagstaff hill maritime museum & village, shipwreck coast, great ocean road, warrnambool breakwater, coast barometer, coastal barometer, barometer, weather warning, ports and harbours, fishery barometer, sea coast barometer, austral otis co, coast barometer no. 8, henry grimoldi, henry langlands, john baptist grimoldi, langlands foundry co, meteorological instrument maker, robert langlands, scientific instrument maker, thermometer, thomas fulton

Sextant used by J P Larken, Government Marine SurveyorThe sextant has been the primary position fixing tool of the marine surveyor for 200 years used to measure angles between beacons or points for hydrographic surveys. A sextant in its own wooden box.On inside box lid; 'A. E. Parson surveying and scientific instrument maker, Queen Street, Melbournesextant, jp larken, marine surveyor

A Fortin style mercury barometer from well-known Australian instrument maker, A.L.Franklin. The column of mercury is supported by the pressure of air on the free surface of the mercury in the cistern at the bottom. Its level can be adjusted to a datum using the screw at the bottom and then the height of the column can be accurately read off using a vernier scale at the top. Attached to a backing timber board with a thermometer. Thermometer made by Townson and Mercer. Metal vertical hanging eyelet.A.L.Franklin, established 1919, scientific instrument makers, Brookvale, NSW; A.L Franklin Sydney No. 457; Townson and Mercer Distributors Pty Ltd throughout Aust and NZ.;weather station, soil science, science, student outside activities, measurements, air pressure, atmospheric pressure, air temperature, artifact

Robert James Minnitt introduced the concept of self-administered analgesia, using an apparatus designed and built in conjunction with London scientific instrument-maker, Charles King. The Minnitt apparatus met with considerable success and led to further modifications, including the introduction of the Queen Charlotte gas-air analgesia apparatus in 1936, manufactured by the British Oxygen Company.Black and white photograph of a Minnitt gas/air analgesia apparatus, in a Queen Charlotte case. The case is standing open with the apparatus inside. A label with instructions is on the left side of the case, and the apparatus is on the right side of the case. A nitrous oxide cylinder tank and valve is connected to a small box with a regulator. A tube with a breathing mask is attached to the box. The Queen Charlotte case has hinges on the side and a handle on the top.minnitt gas air apparatus, minnitt, nitrous oxide, queen charlotte case, anaesthetic equipment

James Henry Steward (1817–1896) were opticians and scientific instrument makers and became established as J.H. Steward in London in 1852. He advertised himself as a “Head Optician” and on the 1st of February, 1913 became incorporated as J.H. Steward Limited. The company produced a large range of items for military use and advertised in their catalogs that they produced instruments for ‘reconnoitering, sketching, night Marching, signaling and gun Laying’. They were well thought of with their work to such a standard that they were made opticians to 'British & Foreign Governments, the National Rifle Associations of England, India, Canada & the Colonies and the National Artillery Association. An item that was produced in large quality by a well known maker who supplied the British military during the late 19th and early 20th century.Binoculars solid brass black covered with Green fabric around cylinders binoculars are complete with geared focusing and pull out lens hoods.Inscribed "The Duke Binocular"flagstaff hill, warrnambool, flagstaff-hill-maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, binoculars, the duke binocular, james henry steward, military maker, signaling, gun laying, optician

Not much is known about William Rothwell other than he is recorded as working as an optician and scientific instrument maker in Manchester at 277 Deansgate Street from 1780 until 1820. An entry in the “Complete History of the Trades of Manchester” published in 1822, in which the author describes Mr William Rothwell as an intelligent young man who is conversant in several languages. He went on to describe him as an philosophical instrument maker of optical and mathematical objects, specialising in spectacles, all sorts of surveyors instruments as well as eye glasses of all types. At present that is all that is known of William Rothwell other than his products were made to the highest standards of the time. Today his products are now actively sought by collectors and are currently fetching high prices at auction sales overseas. The telescope is a rare item even though not much is known about Rothwell's history his scientific instruments and optical items fetch high prices when they become available as collectors look for rare and well made items from the 18th and 19th centuries. Its completeness and good condition make it a very good addition to the collection at Flagstaff Hill. A three draw military telescope brass with main cylinder section made of wood, main lens is removable for cleaning.Marked "Rothwell, Manchester"flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, telescope, william rothwell, scientific instrument, manchester optician, optician

This Minnitt machine was owned by Dr Mary Clementina DeGaris. Dr DeGaris qualified from medicine, MB BS, at the University of Melbourne in 1905. She continued her studies, becoming only the second woman in Victoria to qualify MD, in 1907. With the outbreak of war, DeGaris attempted to enlist as a doctor with the Australian Army but was refused. Undeterred she travelled to England, where she joined the Scottish Women's Hospitals for Foreign Service, a medical group made up entirely of women. After the war, she returned to Australia and set up practice as an obstetrician in Geelong, Victoria. Subsequently, the Geelong Hospital named a wing after her, "DeGaris House", which is now part of Geelong Private Hospital. DeGaris was awarded the St Saba medal, 3rd class, for her work during WWI. Robert James Minnitt introduced the concept of self-administered analgesia, using an apparatus designed and built in conjunction with London scientific instrument-maker, Charles King. The Minnitt apparatus met with considerable success and led to further modifications, including the introduction of the Queen Charlotte gas-air analgesia apparatus in 1936.Brown leather suitcase with brass locks and leather handle. Inside the case is metal equipment, with arms for attaching cylinders. On top of the case, located underneath the handle, is a small brass plate, bearing the name of the owner in black printed script on a piece of card or paper held inside the plate.Printed in black ink on name plate: Dr Mary C. De Garis.minnitt, geelong, scottish women's hospitals, world war i, obstetrician

The Fuller cylindrical slide rule, is a cylindrical slide rule with a helical main scale taking 50 turns around the cylinder. This creates an instrument of considerable precision – it is equivalent to a traditional slide rule 25.40 metres (1,000 inches) long. It was invented in 1878 by George Fuller, professor of engineering at Queen's University Belfast, and despite its size and price it remained on the market for nearly a century because it outperformed nearly all other slide rules. He patented it in Britain in 1878, described it in a journal in 1879 and in that year he also patented it the United States, depositing a patent model. As with other slide rules, the Fuller is limited to calculations based on multiplication and division with additional scales allowing for trigonometrical and exponential functions. The mechanical calculators produced in the same era were generally restricted to addition and subtraction with only advanced versions, like the Arithmometer, able to multiply and divide. Even these advanced machines could not perform trigonometry or exponentiation and they were bigger, heavier and much more expensive than the Fuller. In the mid-twentieth century the handheld Curta mechanical calculator became available which also competed in convenience and price. However, for scientific calculations the Fuller remained viable until 1973 when it was made obsolete by the HP-35 handheld scientific electronic calculator. Fuller's calculators were manufactured by the scientific instrument maker W.F. Stanley & Co. of London who made nearly 14,000 between 1878 and 1973.Like all slide rules, logarithmic scales are used to facilitate calculations more quickly and efficiently. The spiral logarithmic scale greatly increases the precision and computing power of the slide rule. In addition, its tables provide useful information to its users, most likely engineers. Its remarkable length permitted a high level of precision in calculations; calculations could be made to 4 or 5 significant digitsThe fuller calculator, is a cylindrical slide rule with a helical main scale taking 50 turns around the cylinder. There is a papier-mache cylinder fastened to a mahogany handle. A second papier-mache cylinder is a slide fit over the first. Both cylinders are covered in paper varnished with shellac. A brass pointer with an engraved index marker at its tip is attached to the handle and a second brass pointer is attached to the top cap. On the outer cylinder is a helical logarithmic scale 500" (41'8" or about 12.5 m) in length. This cylinder can be slid and rotated upon the inner one and hence with the correct sequence of movements, multiplications and divisions can be made and the answers read off the two pointers which project over the cylindrical scale.FULLER CALCULATOR inscribed on brass pointerscientific instrument, mathematics, calculating

This Sikes brass hydrometer was manufactured by the optical and scientific instrument makers Kasner & Moss of 17 Collins Street West, Melbourne, in the latter part of the nineteenth century. The firm adverted hydrometers, as well as optical instruments, as early as August 13th, 1864, in The Age, Melbourne. This hydrometer set was donated to Flagstaff Hill in 1979 by local wine and spirits merchants Lynch Bros of Fairy Street, Warrnambool. Giffen Russell had established the business in 1878, and Harry Lynch took it over in the 1930s, and after he passed away in 1953 Kevin Matthew Lynch became proprietor of K M Lynch Food and Liquor. The business closed in the 2010s. The hydrometer may date back to the establishment of the business in 1878, as Kasner & Moss were selling hydrometers in Melbourne from 1864. Hydrometers were used to measure the density, or relative density, of liquids from the late 1600s. In 1816 Bartholomew Sikes won the competition for the most useful accurate hydrometer. Hydrometers were commonly used by distillers, vintners, and brewers to establish accurate measures of alcohol concentration in their beverages. Following this manufacturing process, government inspectors and excise officers used them to check that the labelled indications of alcohol-proof were correct and that the right amounts of duty were being paid. This hydrometer and its fitted and hinged wooden container show signs of heavy and protracted use in a working environment. Although the instrument has some parts missing and has been recently repaired, the original quality of the inlaid box and the fine engraving on the instrument and the attachable weights, are indications of the hydrometer’s very real value when new. This Sikes hydrometer, bearing the maker's mark of “Kasner & Moss Melbourne” and the registered number “20373”, was presented to the purchasing public as a precision-made instrument designed for professional use. The Sikes hydrometer is of local significance because of its implied association with the alcohol trade in the southwest region of Victoria. It was donated by a family member of Lynch Bros, a local licensed outlet for wines and spirits in the period before the general relaxation of liquor licensing laws in the State of Victoria. It may have belonged to Griffin Russell who established the liquor store in 1878.Hydrometer; original Sikes brass hydrometer in a polished wooden case with an inlaid plaque on the lid. The brass float is a sphere with a thin flat upper stem and a short, lower stem with a bulb-shaped end. The upper stem is engraved scale on both sides with the numbers 1 to 10, and five divisions between each number. There are ten fixed pegs in the base to secure the thick brass horseshoe-shaped, numbered, various-sized weights (20, 30, 40, 80, 90); the free pegs would have originally stored another five weights (10, 50, 60, 70, and 100). The empty compartment in the box suggests another part in the initial set, probably a thermometer. The fitted, fabric-lined box has two brass closures and two brass hinges. The scientific instrument shows signs of heavy use and repairs. The Serial Number on the float matches the Serial Numbers on the weights. The plaque on the lid, the float and the weights have inscriptions. Made by Kasner & Moss, Melbourne. Plaque: “SIKES HYDROMETER / KASNER & MOSS / MELBOURNE” On float's lower stem: “SIKES 20373” On one thin edge of the float's scale, engraved in script “Kasner & Moss” and stamped “MELBOURNE”, and symbol“P” rotated 90 degrees. On the opposite thin edge of the float: “N20.373”, “SIKES”, “I P % II O” (in ornate capitals). Each weight has s unique number, and the same serial number “20373”.flagstaff hill, flagstaff hill maritime museum and village, warrnambool, maritime museum, maritime village, great ocean road, shipwreck coast, sikes hydrometer, scientific instrument, pressure measurement, measuring instrument, ullage tool, customs, excise duty, tax, alcohol content, proof, calibrate, standard weights and measures, tariff, kasner & moss, scientific instrument makers, specific gravity, liquid density, alcohol testing, technology, alcohol measurement, proof spirit, wine and spirits merchants, local business, brass measuring instrument, k m lynch, giffen russell, harry lynch

This telescope was amongst various items collected from a sea dive in Port Phillip Bay. The diver was the caretaker of the Port Lonsdale Lighthouse, who dived on various wrecks in the bay during the 1960's. After the caretaker's death, his son sold off many of the shipwreck artefacts. The telescope was purchased from the caretaker's son in the 1990's by a previous owner of the Marine Shop, Queenscliff, Victoria. Many companies were making scientific instruments in Liverpool. Between 1730 up too today, they manufactured spectroscopes, telescopes, microscopes, barometers, photometers, cameras, ophthalmoscopes, and electrical equipment such as electric lamps. Liverpool was a major centre for the production of scientific items rivaling Glasgow and London from 1850 to 1920. This telescope appears to be of quality manufacture but the origins can only be surmised at based on the gold embossing to the leather surrounding the main brass tube as being associated with Liverpool England. There is no maker or owners mark, so again there is no sure way to determine the year of manufacture or maker. There were many opticians and scientific instrument makers working in and around Liverpool from 1730 through too today. Also the possibility the telescope could have been made outside Liverpool overseas should not be overlooked and may have been made as a souvenir item from Liverpool from the mid to late 20th century. The size and type of telescope is a traditional type that was used for many sporting activities in the mid to late 19th century for deer stalking, bird watching, or used generally. I believe the item dates from sometime around the early to late part of the 20th century as the use of the liver bird mark became popular in 1911. It began appearing on many manufactured items of the period up too today, denoting that these items were made by companies operating in or around Liverpool England. If the item had been made by a notable firm it would have been engraved with the makers name city of origin, or owner as was the accepted practice for these items. The writer has been unable to determine if any specific company had had exclusive use of the liver bird logo as it was widely used and was not copyrighted until the Liverpool football club successfully won a court case giving them the sole rights to the trademark in 2012.The item is also an example of the shipwreck artefacts gathered along the southwest coast of Victoria. It is also a sample of scientific instruments used up to the mid 20th century.Victorian style gentleman's three draw brass telescope with machine milling surrounding the end of each tube and around the objective end. The three tube draw has no split and all three cartridges are held within the main brass tube wrapped in leather with rope bindings at both ends 5 cm in length and beginning 7 cm from the objective end. The last 2.8 cm makes up the remainder of the brass tube which has a sliding brass sunshade. The eyepiece is flat and has a protective slide over the lens aperture. Two relay lenses are missing on the ends of the second and third tube. Gold embossed into the leather an inscription “Trade the Liver Mark” also embossed in gold a depiction of the mythical liver bird, associated with the city seal of Liverpool England. flagstaff hill, flagstaff hill maritime museum and village, warrnambool, maritime museum, maritime village, great ocean road, shipwreck coast, shipwreck artefact, port phillip bay, port lonsdale lighthouse, wreck, 1960’s diver, queenscliff marine shop, liver bird, scientific instrument, telescope, three drawer telescope, liverpool, liver bird trade mark, trade mark

A moulding plane is a specialised plane used for making the complex shapes found in wooden mouldings that are used to decorate furniture or other wooden objects. Traditionally, moulding planes were blocks of wear-resistant hardwood, often beech or maple, which were worked to the shape of the intended moulding. The blade or iron was likewise formed to the intended moulding profile and secured in the body of the plane with a wooden wedge. A traditional cabinetmakers shop might have many, perhaps hundreds, of moulding planes for the full range of work to be performed. Large crown mouldings required planes of six or more inches in width, which demanded great strength to push and often had additional peg handles on the sides, allowing the craftsman's apprentice or other workers to pull the plane ahead of the master who guided it. Company History: The Holtzapffel dynasty of tool and lathe makers was founded in Long Acre, London by a Strasbourg-born turner, Jean-Jacques Holtzapffel, in 1794. The firm specialized in lathes for ornamental turning but also made a name for its high-quality edge and boring tools. Moving to London from Alsace in 1792, Jean-Jacques worked initially in the workshop of the scientific-instrument maker Jesse Ramsden, Anglicizing his name to John Jacob Holtzapffel. In 1794 he set up a tool-making partnership in Long Acre with Francis Rousset and they began trading under the name of John Holtzapffel. From 1804 he was in partnership with the Mannheim-born Johann Georg Deyerlein until the latter died in 1826, trading under the name Holtzapffel & Deyerlein. Holtzapffel sold his first lathe in June 1795, for £25-4s-10d, an enormous price at the time. All of Holtzapffel's lathes were numbered and by the time he died in 1835, about 1,600 had been sold. The business was located at 64 Charing Cross, London from 1819 until 1901 when the site was required "for building purposes". The firm then moved to 13 and 14 New Bond Street and was in premises in the Haymarket from 1907 to 1930. John's son, Charles Holtzapffel (1806–1847) joined the firm in 1827, at around which time the firm became known as Holtzapffel & Co. Charles continued to run the business after his father's death. He wrote a 2,750-page treatise entitled Turning and Mechanical Manipulation, published in 1843 which came to be regarded as the bible of ornamental turning. The final two volumes were completed and published after his death by his son, John Jacob Holtzapffel (1836–1897). When Charles Holtzapffel died in 1847 his wife Amelia ran the business until 1853. John Jacob II, the son of Charles and Amelia, was head of the firm from 1867 until 1896. A nephew of John Jacob II, George William Budd (1857–1924) became head of the firm in 1896. His son John George Holtzapffel Budd (1888–1968) later ran the business. By the early twentieth century, ornamental turning was going out of fashion, and the firm sold its last lathe in 1928. A vintage tool made by a well-known firm made for firms and individuals that worked in wood. The tool was used before routers and spindle moulders came into use after World War ll, a time when to produce a decorative moulding for a piece of furniture or other items this had to be accomplished by hand using one of these types of planes. A significant item from the mid to late 19th century that today is quite rare and sought after by collectors. It gives us a snapshot of how furniture was made predominately by hand and with tools that were themselves hand made shows the craftsmanship used to make such a unique item. Moulding Plane Holtzaffel 64 Charing & Owner J Heath 9/16" marked opposite endflagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, plane moulding, plane, j heath

A moulding plane is a specialised plane used for making the complex shapes found in wooden mouldings that are used to decorate furniture or other wooden objects. Traditionally, moulding planes were blocks of wear-resistant hardwood, often beech or maple, which were worked to the shape of the intended moulding. The blade or iron was likewise formed to the intended moulding profile and secured in the body of the plane with a wooden wedge. A traditional cabinetmakers shop might have many, perhaps hundreds, of moulding planes for the full range of work to be performed. Large crown mouldings required planes of six or more inches in width, which demanded great strength to push and often had additional peg handles on the sides, allowing the craftsman's apprentice or other workers to pull the plane ahead of the master who guided it. Company History: The Holtzapffel dynasty of tool and lathe makers was founded in Long Acre, London by a Strasbourg-born turner, Jean-Jacques Holtzapffel, in 1794. The firm specialized in lathes for ornamental turning but also made a name for its high-quality edge and boring tools. Moving to London from Alsace in 1792, Jean-Jacques worked initially in the workshop of the scientific-instrument maker Jesse Ramsden, Anglicizing his name to John Jacob Holtzapffel. In 1794 he set up a tool-making partnership in Long Acre with Francis Rousset and they began trading under the name of John Holtzapffel. From 1804 he was in partnership with the Mannheim-born Johann Georg Deyerlein until the latter died in 1826, trading under the name Holtzapffel & Deyerlein. Holtzapffel sold his first lathe in June 1795, for £25-4s-10d, an enormous price at the time. All of Holtzapffel's lathes were numbered and by the time he died in 1835, about 1,600 had been sold. The business was located at 64 Charing Cross, London from 1819 until 1901 when the site was required "for building purposes". The firm then moved to 13 and 14 New Bond Street and was in premises in the Haymarket from 1907 to 1930. John's son, Charles Holtzapffel (1806–1847) joined the firm in 1827, at around which time the firm became known as Holtzapffel & Co. Charles continued to run the business after his father's death. He wrote a 2,750-page treatise entitled Turning and Mechanical Manipulation, published in 1843 which came to be regarded as the bible of ornamental turning. The final two volumes were completed and published after his death by his son, John Jacob Holtzapffel (1836–1897). When Charles Holtzapffel died in 1847 his wife Amelia ran the business until 1853. John Jacob II, the son of Charles and Amelia, was head of the firm from 1867 until 1896. A nephew of John Jacob II, George William Budd (1857–1924) became head of the firm in 1896. His son John George Holtzapffel Budd (1888–1968) later ran the business. By the early twentieth century, ornamental turning was going out of fashion, and the firm sold its last lathe in 1928. A vintage tool made by a well-known firm made for firms and individuals that worked in wood. The tool was used before routers and spindle moulders came into use after World War ll, a time when to produce a decorative moulding for a piece of furniture or other items this had to be accomplished by hand using one of these types of planes. A significant item from the mid to late 19th century that today is quite rare and sought after by collectors. It gives us a snapshot of how furniture was made predominately by hand and with tools that were themselves hand made shows the craftsmanship used to make such a unique item. Moulding Plane Holtzaffel 64 Charing & Owner J Heath 9/16" marked opposite endflagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, plane moulding, plane, j heath

This instrument is a folding arm protractor. It is used for measuring angles on the vertical and horizontal planes. The two folding arms have small metal support springs where they are attached to provide support and the other ends have pins with which to mark particular points. A screw mechanism on the rim allows fine tuning of plotting. Chadburn, Brothers were fine instrument makers of Sheffield making optical and nautical instruments during the 19th century. This item was donated by a local resident whose grandfather Carl Spence was a bridge builder who worked on the Warrnambool Breakwater extension c 1919. This item has scientific significance which is possibly linked via the owner to one of Warrnambool's most well known landmarks.Brass, circular instrument with fold out sections which are hinged and a movable section. The circular part is marked in degrees around the circle. Notches on inner rim at 90 degrees intervals. Chadburn ,Brothers Sheffield. Graduated scale measuring 360 degrees.warrnambool, warrnambool breakwater

This microscope belonged to James William Manifold Aitkin (1835-1905) who was born in Tasmania and came to Warrnambool in 1852. He was a shopkeeper, produce merchant and flour miller who came to live at the property of Carracoorte, Grasmere in the late 1880s. He was a member of the Warrnambool Municipal Council from 1861 to 1868 and was Chairman of the Borough in 1863 when Warrnambool was declared a town and an early Mayor. The microscope was an improved model of a design by Benjamin Martin, an 18th century instrument maker considered one of the greatest designers and manufacturer of microscopes of his time. This microscope is of great significance because: 1. It is a beautiful object with high antiquarian and scientific interest 2. It has strong local significance as it belonged to James William Manifold Aitkin, a prominent Warrnambool and district businessman and farmer 3. It has social significance as it demonstrates the interest in natural history by the more affluent and educated men of the time. This microscope is in a polished wooden box with a metal lock (no key). The microscope is an English Martin Improved drum microscope (c. 1850) and made of brass. Inside the box there are two divisions, one to house the microscope. The other has a drawer containing six slide samples made of ivory or bone and five glass slides (with the listed material missing) and five other small items. On top of the drawer is a section for the microscope attachments contained in ten small inserts. The ten attachments are made of brass. There are also six items not in any particular inserts. There are two small slots for the pincers and slides etc. The only writings are the names and information on the slidesjames aitkin, microscope, benjamin martin, benjamin martin microscope, warrnambool

Theodolites have been used to measure horizontal and vertical angles by surveyors since the 1500s. A theodolite is a precision instrument for measuring angles in the horizontal and vertical planes. Theodolites are used mainly for surveying applications, and have been adapted for specialized purposes in fields like meteorology and rocket launch technology. Theodolites, such as this one, were instrumental to early surveyors, and would have played a significant part in their everyday work. The plumb bob was used to set the instrument exactly over a fixed survey marker.This theodolite was made by Troughton and Simms, who were significant scientific instrument makers of the 19th century and early 20th century. In 1782 John Troughton purchased Benjamin Cole's shop in Fleet Street, London enabling him to sell his own signed products. His instrument making business supported several dynasties of Troughtons before becoming Troughton and Simms and later still Cooke Troughton & Simms. This firm was one of the most well respected firms of instrument makers of the 1800s. A grey metal theodolite - probably made of brass. It has movable parts and there is a weight ( a plumb bob) attached with string.Cooke Troughton & Simms Yorke England V012318 Supplied by A. E. Parsons Melbournetheodolite scientific-instruments surveying

This telescope was amongst various items collected from a sea dive in Port Phillip Bay. The diver was the caretaker of the Port Lonsdale Lighthouse, who dived on various wrecks in the bay during the 1960's. After the caretaker's death, his son sold off many of the shipwreck artefacts. The telescope was purchased from the caretaker's son in the 1990's by a previous owner of the Marine Shop, Queenscliff, Victoria. John Browning was particularly well known for his scientific advances in the fields of spectroscopy, astronomy, and optometry. Between 1856 and 1872, Browning acquired provisional patents for designs of numerous scientific instruments. He was also the recipient of an award at the 1862 International Exhibition held in London. Also recognised for his temperature-compensated aneroid barometer. Browning's scientific instruments were used in physics, chemistry, and biology. The products he designed and manufactured included spectroscopes, telescopes, microscopes, barometers, photometers, cameras, ophthalmologist, and electrical equipment such as electric lamps. John Browning was born around 1831 in Kent, England. His father, William Spencer Browning, was a maker of nautical instruments. John Browning's great-grandfather was also an instrument maker as well as John’s brother Samuel Browning of the firms Spencer & Browning and Spencer, Browning & Rust, who also manufactured navigational instruments. The latter firm was in operation in London from 1784 to 1840 and was succeeded by the firm of Spencer, Browning & Co. John Browning initially intended to follow the medical profession and entered Guy's Hospital, a teaching hospital and a school of medicine. Despite having passed the required examinations, however, he abandoned his plans. Instead, he apprenticed with his father, William Spencer Browning. At the same time, in the late 1840s, he was a student attending the Royal College of Chemistry several days per week. By the early 1870s, practical optics had become John Browning's primary interest, and he listed his occupation as an optician on the census records from 1871 to 1901. He was well known among London's ophthalmic surgeons for his various ophthalmic instruments. He had a large part in reforming the art of crafting spectacles. Other achievements were as an author of the book, How to Use Our Eyes and How to Preserve them by the Aid of Spectacles. Published in 1883, the book included thirty-seven illustrations, including a diagram demonstrating the anatomy of the eye. In 1895, he was one of the founders of the "British Ophthalmology" the first professional organisation for optometry. He was not only its first president but also registered as its first member so many considered him to be the first professional optometrist. Other professional organisations he belonged too was as a member of “The Aeronautical Society of Great Britain”. In 1871 constructing the first wind tunnel located at Greenwich Marine Engineering Works. He was also a member of other scientific organisations, such as the “Microscopical Society of London”, the “Meteorological Society”, and the “Royal”. Then in 1908 the company of W. Watson & Son, opticians and camera makers, took over John Browning's company since 1901 John Browning had been semi-retired but in 1908 he fully retired and moved to Bournemouth in Hampshire. He died in Cheltenham, Gloucestershire in 1925.The telescope is significant for its association with one of the world’s leading scientific instrument makers and inventor of the 19th and early 20th century. It is believed the donation came off a wreck either in Port Philip Bay or between Point Lonsdale and the Nepean Heads making it a significant maritime historical artefact. Its provenance is good given it was taken off a wreck in this area by the Point Lonsdale lighthouse caretaker. Examples of John Browning's telescopes because of their scientific and historical importance are highly valued by collectors.Marine style single draw brass telescope with a sunshade. The single draw has no split and the second cartridge is held in a long brass tube within the single draw, mounted from the objective end. The eyepiece is flat and at the end of the first draw in a very faded engraving that is believed to read "John Browning, 63 Strand, and should read London under the word strand but this is hard to establish given the engravings condition. This interpretation of the engraving has been arrived at by examination of other John Browning telescope engraving examples."John Browning, engraved to the first tube in copper plate style "63 STRAND" Engraved under in capital textflagstaff hill, flagstaff hill maritime museum and village, warrnambool, maritime museum, maritime village, great ocean road, shipwreck coast, shipwreck artefact, port phillip bay, port lonsdale lighthouse, wreck, 1960’s diver, queenscliff marine shop, john browning, telescope, spectroscopy, optometry, scientific instruments, william spencer browning, optician, navigational instrument, microscopical society of london, aeronautical society, marine technology

The ship’s telegraph section was once part of the navigational equipment of the famous paddle steamer, PS Hygeia, and was later installed on Flagstaff Hill’s exhibit, the steamer Rowitta. This is the Bridge Section of a ship’s telegraph, a Duplex Gong model, made by Chadburn & Son of Liverpool. The gong sounded two signals whenever the navigational commands to change the speed or direction were given by the ship’s pilot. Communication between the ship’s pilot and the engine room in the late 19th to the mid-20th centuries was made with a system called an Engine Order Telegraph (E.O.T.) or ship’s telegraph. The equipment has two parts, the Bridge Section and the Engine Room Section. The Bridge Section was usually mounted onto a pedestal, and the Engine Room Section was attached to a vertical surface. The standard marine commands were printed or stamped around the face of the dial and indicated by a pointer or arrow that was usually moved by a rotating brass section or handle. The ship’s pilot stationed on the Bridge of a vessel sends his Orders for speed and direction to the Engine Room with the E.O.T. He moves the lever or levers, depending on the number of engines the ship has, to change the indicator on the Bridge Section’s dial to point in the new direction and speed of travel. This change causes the Orders to be duplicated on the Engine Room Section’s dial and a bell or bells to signal the change at the same time. The engineer then adjusts the ship’s engines and steering equipment to follow the pilot’s Order. CHADBURN & SON, Liverpool- Chadburn Brothers, William and C.H., were joint inventors and well-established makers of optical and scientific instruments and marine gauges. The firm was granted the Prince Albert Royal Warrant in the late 19th century. In 1870, William Chadburn applied for a patent for his navigational communication device for use on ships. By 1875, Chadburn & Son was producing the brass Engine Order Telegraph in its plant at 71 Lord Street, Liverpool. In 1911, the ship, RMS Titanic, was launched, fitted with Chadburn & Sons E.O.T. The Chadburn Ship Telegraph Company Limited was registered in 1898 to take over Chadburn & Sons. In 1903, a large factory at Bootle, near Liverpool, and its products were being sold overseas. In 1920, electric-powered telegraphs were developed. In 1944, the name changed to Chadburn’s (Liverpool) Limited. In 1968, the company became Chadburn Bloctube Ltd. In 2000, the company, now Bloctube Marine Limited, was still manufacturing ship telegraphs. The P.S. HYGEIA 1890-1932: - This ship’s telegraph was installed on the new paddle steamer, PS Hygeia, one of three iconic pleasure steamers famous for providing regular services in Port Phillip Bay, Victoria, to thousands of passengers between the ports of Queenscliff, Sorrento, Portsea, Dromana, Rosebud, Rye, and Mornington. It joined the Ozone and the Weeroona, all three described as being glamorous, powerful and fast. Its ticket office was on the pier itself. The P.S. Hygeia was built in Yorker, Scotland, in 1890, by Napier, Sharks & Bell. It was registered in Melbourne, Australia, by Hubbart, Parker & Co. in 1891. The steel ship was 92 metres long, able to travel at 22 knots, and licensed to carry over 1600 passengers in luxury, with even a barber shop on board. The regular service between the ports in Port Phillip Bay, Victoria, continued for over 40 years. With the decline in passenger demand, the service wound down. The Hygeia was sold to H.M. Morris in 1931 for demolition and breaking up. Equipment, fittings, and even lifebuoys were sold, with many items purchased by people who had some connection to the Hygeia. On August 25th, 1931, what was left of the vessel departed Port Melbourne and eventually, in June 1932, it was laid to rest at the ships’ graveyard outside Port Phillip Heads. The SS ROWITTA 1909-2015: - The ship’s telegraph was originally installed on the PS Hygeia. It was purchased when the Hygeia was broken up in 1931 and later installed, in 1975, on Flagstaff Hill’s SS Rowitta, an exhibit greatly enjoyed by the public until it was demolished in 2015. The ferry “SS Rowitta” was built in 1909 in Hobart, Tasmania. The timber steam ferry was built using planks of Huon and Karri wood. It was a favourite with sightseeing passengers steaming along Tasmania’s Tamar and Derwent rivers for 30 years. Rowitta was also known as Tarkarri and Sorrento and had worked as a coastal trading vessel between Devonport and Melbourne, and Melbourne, Queenscliff and Sorrento. The vessel had given over 100 years of service and pleasure. This Bridge section of a ship’s Engine Order Telegraph, used with an Engine Room section, represents late-19th-century change and progress in communication and navigation at sea. This type of equipment was still in use in the mid-20th century. It is significant for its association with its maker, Chadburn & Son, of Liverpool, a well-known marine instrument maker whose work was recognised by English Royalty, and whose products were selected to supply similar equipment for use on the RMS Titanic. The ship’s telegraph is also significant for its association with the paddle steamer PS Hygeia, one of three iconic steamers that transported thousands of passengers from port to port within Port Phillip Bay, Victoria, for over 40 years from the 1890s to the 1930s. Queenscliff Borough remembers the Hygeia by naming a road near the pier Hygeia Drive. The Hygeia is registered on the Victorian Heritage Database as a vessel of significance, VHR S329. In 1901, Hygeia had the privilege of carrying their Royal Highnesses, the Duke and Duchess of York, from Mornington to St Kilda Pier, Melbourne, during their Royal visit celebrating the Federation of Australia. The ship’s telegraph is also important for its connection with the Rowitta, a large exhibit on display at Flagstaff Hill Maritime Village, aiding maritime education for over 40 years. It represented the importance of coastal traders to transport, trade and communication along the coast of Victoria, and before the availability of rail and motor vehicles, serving many roles. Bridge section of a Ship’s Telegraph or Engine Order Telegraph (E.O.T.). The round, double-sided, painted glass dial is inside a brass case behind glass. It is fitted onto an outward tapering brass pedestal with a round base. The brass indicator arrows between the handles point simultaneously to both sides of the dial when moved. An oval brass maker’s plate is attached to the top of the case. The dial’s faces have inscriptions that indicate speed and direction, and the front face and plate include the maker’s details. A serial number is stamped on the collar where the dial is fitted to the pedestal. The ship’s telegraph is a Duplex Gong model, made by Chadburn & Son of Liverpool. It was originally part of the navigational fittings on the paddle steamer, PS Hygeia.Dial, maker’s details: “PATENT “DUPLEX GONG” TELEGRAPH / CHADBURN & SON / TELEGRAPH WORKS / PATENTEES & MANUFACTURERS / 11 WATERLOO ROAD / LIVERPOOL” LONDON / 105 FENCHURCH STREET” “NEWCASTLE / 85 QUAY + SIDE” “GLASGOW / 69 ANDERSON QUAY” “PATENT” Dial instructions: “FULL / HALF/ SLOW / FINISHED WITH ENGINES / STOP STAND BY / SLOW / HALF / FULL / ASTERN / AHEAD” Maker’s plate: “CHADBURN / & SON / PATENT / LIVERPOOL” Serial number: “22073”flagstaff hill, warrnambool, maritime village, maritime museum, shipwreck coast, great ocean road, engine order telegraph, e.o.t., navigational instrument, communication device, ship’s telegraph, engine room section, bridge section, rms titanic, chadburn & son, chadburn brothers, william chadburn, chadburn ship telegraph company, chadburns, duplex gong, liverpool, ss rowitta, navigation, marine technology, pilot’s orders, steam power, hobart, tasmania, devonport, tasmanian-built, ferry, steam ferry, steamer, 1909, early 20th century vessel, passenger vessel, tamar trading company, launceston, george town, sorrento, tarkarri, speculant, peter mcgennan, p j mcgennan & co. port phillip ferries pty ltd, melbourne, coastal trader, timber steamer, huon, karri, freighter, supply ship, charter ferry, floating restaurant, prawn boat, lakes entrance, ps hygeia, paddle steamer, pleasure steamer, port phillip bay, queenscliff, portsea, dromana, rosebud, rye, mornington, hubbart parker & co, 1890, 1903, h.m. morris, hygeia

Negretti and Zambra 1850-1980s were optical instrument makers and mathematical instrument makers based in London, England. The firm of Negretti and Zambra was established in 1850 by Henry Negretti and Joseph Zambra who had formed a partnership. Their skill was immediately apparent when exhibiting at the 1851 Great Exhibition at Hyde Park, they were the only English instrument makers to receive a prize medal for meteorological instruments, resulting in their appointment as instrument makers to the queen, Greenwich observatory, and the British Meteorological Society. In 1853, when the Crystal Palace was re-erected in Sydenham, Negretti and Zambra became the official photographers of the Crystal Palace Company, which allowed them to photograph the interior and grounds of the new building. The firm made use of this access to produce a number of stereographs. Between 1855 and 1857 Negretti and Zambra commissioned photographer Pierre Rossier to travel to China to document the Second Opium War. Although Rossier subsequently was unable to accompany to Anglo-French forces in that campaign, he nevertheless produced a number of stereographs and other photographs of China, Japan, the Philippines and Siam (now Thailand), which Negretti and Zambra published and that represented the first commercial photographs of those countries. In 1856 Negretti and Zambra sponsored a photographic expedition to Egypt, Nubia and Ethiopia conducted by Francis Firth. In 1864 Negretti and Zambra (themselves) photographed Shakespeare's House at Stratford on Avon. A sepia photograph was then pasted onto card 4" × 2.5". This was then presented to visitors to the Crystal Palace to enable them to compare it with the model erected by Mr E. T. Parr in the Centre Transept. The card itself is headed "Crystal Palace April 23rd 1864." That year they also published a book, titled A Treatise on Meteorological Instruments, (which was reprinted in 1995). Throughout World War One Negretti and Zambra were entirely engaged in the production of various instruments for the Ministry of Munitions. They developed many instruments for the Air Ministry including a mercury-in-steel distance thermometer for taking the oil and air temperatures in aircraft which was patented in 1920. In 1946 the company went private and in 1948 the company was made public, and by 1950 Negretti and Zambra had 821 employees in Britain. In order to increase production and to safeguard future development in 1964, they purchased a modern factory at Aylesbury for all their production. In 1981 Negretti and Zambra were taken over by a group of financial institutions in the form of Western Scientific Instruments and in 1985 the company was acquired by Meggitt Holdings.The subject compass is just one type of the many marine and scientific, optical items this company produced over it’s life time. Negretti and Zambra were prolific manufactures of types of items as well as being very prominent in photography pioneering new innervation's and sponsoring expeditions to little known countries to document peoples daily lives and culture through photography.Azimuth compass on tripod in a fitted wooden box with a round spirit level included, lid of box has three indented circles where the legs of the compass fit when it is set up for use. Stamped "C.M.O. 9" on with Maker Negretti & Zambra London.flagstaff hill, warrnambool, flagstaff-hill, flagstaff-hill-maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, azimuth compass, nautical instrument, negretti & zambra london, navigational instrument, compass

Optometrists are trained to examine eyes and prescribe visual aids such as spectacles. The optometer pictured in the media section of this document dates from the 1800s. The optometer was used with various lenses to determine the refraction of the eye. Refraction means the extent to which light is bent by an individual's eye. The result can determine how short-sighted or long-sighted they are, and the strength of spectacles required. In the second half of the 1800s, ophthalmologists also devised instruments to measure the separate components of vision. Dr Jules Badal developed the pictured instrument in 1876. It was based on an optometer invented by William Porterfield in 1759. The brass stands look as though they were made for an optometer to be table mounted, with heavy brass stands and designed to hold a cylindrical object securely as would be required by an optometer. Stands appear to have been very well made and very early probably early to mid 19th Century by a well known scientific instrument maker given there are no inscriptions or marks to indicate the time period made or maker it is difficult to assume significance to these items at this point in time as well as the items are incomplete.The brass stands believed to be for mounting an early Optometer an (ophthalmic instrument) Noneflagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, stands for scientific instrument

Opera Glasses came into existence as a result of a long line of inventions, and further improvements upon those inventions. The process started in the year 1608 when a Dutch optician by the name of Hans Lipperhey developed the first pair of binoculars with a magnification capability of X3. Less than a year later, a well-known inventor and philosopher by the name of Galileo developed what became known as the Galilean telescope. Advertisements were first found for opera glasses and theatre binoculars in London as early as 1730 in the form of a long collapsible telescope. The "Opera Glass" as it was referred to; was often covered in enamel, gems, ivory, or other art and paintings. For almost 100 years opera glasses existed merely as telescopes. In Vienna, in 1823 the first binocular opera glasses and theatre binoculars began to appear. They were two simple Galilean telescopes with a bridge in the centre, each telescope focused independently from the other by extending or shortening the telescope until the desired focus was achieved, which was useful, yet very cumbersome. Two years later in Paris, Pierre Lemiere improved on this design and created a centre focus wheel. This allowed the focusing of both telescopes together. After this development, opera glasses and theatre binoculars grew in popularity because of the superior view they facilitated in opera and theatre houses. The beautiful design of the glasses themselves also added appeal to the opera-going crowd. By the 1850's opera glasses and theatre, glasses had become a must-have fashion accessory for all opera and theatregoers. A vintage pair of 1920s opera glasses probably made in France by an unknown maker the item is significant due to it's provenance that can be traced and it's completeness as a useful social item and fashion accessory used by theatergoers from the mid 19th century and well into the 20th century. Some people still use modern variants of theater glasses today to improve their enjoyment of the theater.Both glasses and case are covered with black and white snake skin. Case lined with purple velvet, and has brass closure clip.Noneflagstaff hill, warrnambool, shipwrecked coast, flagstaff hill maritime museum, maritime museum, flagstaff hill maritime village, great ocean road, opera glasses, serpentine opera glasses, binoculars, accessories, optical instrument, scientific instrument, theater glasses, french opera glasses, hans lipperhey

E. R. Watts and Son, makers of theodolites and other surveying instruments, of 123 Camberwell Road, London. The company was established in 1856 by Edwin Watts at twenty-three he had saved £100 from his earnings to start the business with his staff consisting of one boy and later Alexander Clarkson as an apprentice with the workshop a small room over a Bemondsey stable. Watts' first order was from Negretti and Zambra for a mining dial Alexander Clarkson In the early days the firm worked mainly on marine compasses. Edwin Watts would go down to the Docks to adjust the compasses once they had been installed on the ships. In May 1873 the business moved to larger premises a house with a garden. The workshop was also the home of Mr and Mrs Watts and their five sons and three daughters. By now there were fifteen to twenty men employed by the firm. The company were commissioned to supply the Theodolites and Levels for the construction to the Canadian Pacific Railway in 1881. Towards the end of the century, the firm began to make heliographs continuing to produce them for the government until just before the Second World War when by agreement assigned their manufacture to another firm. 1904 The first dividing engine was completed by George William Watts. It was so remarkable an instrument at the time and for years afterwards, In 1907 Arthur Ames went to Canada and started an organisation in Winnipeg in 1909 this became a separate company called E. R. Watts and Son Ltd. of Ottawa. This firm developed considerably and was eventually with the co-operation of three other instrument companies (Cambridge Instrument Co, Ross, and Negretti and Zambra), were reconstituted as ”Instruments Ltd” of Ottawa and Toronto. During the next ten years, the firm expanded greatly to include glass grinding, leather work, dividing and engraving, testing, adjusting and packing. This expansion was continued during the First World War when workshops were completed and the machinery installed and running within eleven weeks from the start of construction. During the war, a Sergeant Coles, among the rats, lice and mud of the trenches, fitted various bits of scrap into his cocoa tin and made the first Flash Spotter for plotting the positions of enemy guns. Coles was rushed home to the firm's factory where he and George William Watts designed a spotter not made out of a cocoa tin and as a result, the Watts Vertical Force Variometer was developed during WWI. Other Watts instruments made in the First World War included the Light Mountain Theodolites which were taken on Mt Everest expeditions. In 1919 ER Watts and Sons was incorporated as a limited company and in 1939 G. A. Whipple joined the Board of Directors. Shortly afterwards, Frank Charles Watts died having been Chairman of the firm for over 37 years and seen it through the First World War with all its expansions and difficulties. He was succeeded by his brother George William Watts with the vacant post of Managing Director being filled by G. A. Whipple. During the Second World War, the company expanded further and the number of employees rose to well over 1,300. In 1946 Watts acquired 78% of Adam Hilger and the microscope maker James Swift and Son Who were Manufacturers of Theodolites, Levels, Alidades, Meteorological Instruments, Variometers, and many other types of scientific instruments Then in 1948 the company amalgamated with Adam Hilger as Hilger and Watts which was then incorporated as a public company.Naval Rangefinder with a vertical wooden handle, and an arrangement of optical lenses. Three reversible brass inserts calibrated on both sides in yards, correspond to various base heights, (20 and 25 feet, 30 and 35 feet and 40 and 50 feet). They are fitted along the axis of the instrument. When the scale for the appropriate base height is selected and inserted, the carriage can be slid for coincidence and the distance read at the index mark on the sliding carriage.inscribed "Rangefinder Cotton Type Mk II" Calibrated scale up to 5000 yds (50 ft), 5000 yds (35 ft), 4000 yds (25 ft) made by E. R. Watts & Son.flagstaff hill, warrnambool, shipwrecked coast, flagstaff hill maritime museum, maritime museum, shipwreck coast, flagstaff hill maritime village, great ocean road, rangefinder, cotton type, e r watts & sons, naval range finder, marine equipment

The clock was either made or sold by T. Gaunt & Co. of Melbourne, a manufacturer, importer and retailer of a wide variety of goods including jewellery, clocks and watches, navigational and measuring instruments, dinnerware, glassware and ornaments. Thomas Gaunt photograph was included in an album of security identity portraits of members of the Victorian Court, Centennial International Exhibition, Melbourne, 1888. Thomas Gaunt History: Thomas Gaunt established Melbourne's leading watchmaking, optical and jewellery business during the second half of the 19th century. Gaunt arrived in Melbourne in 1852, and by 1858 had established his own business at 14 Little Bourke Street. Around 1869 he moved to new premises in Bourke Street on the corner of Royal Arcade, Gaunt's shop quickly became a Melbourne institution. Gaunt proudly advertised that he was 'The only watch manufacturer in the Australian colonies'. While many watches and clocks may have had Gaunt's name on the dial, few would have been made locally. Gaunt did make some watches for exhibitions, and perhaps a few expensive watches for wealthy individuals. Gaunt's received a telegraph signal from Melbourne Observatory each day to correct his main clock and used this signal to rate and repair ship's chronometers and good quality watches. His main horological manufacturing was directed at turret clocks for town halls, churches and post offices. These tended to be specific commissions requiring individualised design and construction. He made the clock for the Melbourne Post Office lobby, to a design by Government Astronomer Robert Ellery, and won an award at the 1880-81 Melbourne International Exhibition for his turret clock for the Emerald Hill Town Hall. He became well known for his installation of a chronograph at Flemington Racecourse in 1876, which showed the time for the race, accurate to a quarter of a second. The firm also installed the clockwork and figures for Gog and Magog in the Royal Arcade. Thomas Gaunt also developed a department that focused on scientific instrumentation, making thermometers and barometers (from imported glass tubes), telescopes, surveying instruments and microscopes. Another department specialised in electroplating for trophies, awards and silverware, and the firm manufactured large amounts of ecclesiastical gold ware and silverware, for the church including St Patrick's Cathedral. There are no records that disclose the number of employees in the firm, but it was large enough for Gaunt to hold an annual picnic for the watchmakers and apprentices at Mordialloc from 1876; two years previously they had successfully lobbied Gaunt to win the eight hour day. Gaunt's workforce was reportedly very stable, with many workers remaining in the business for 15 to 30 years. Gaunt's wife Jane died on September 1894, aged 64. They had one son and six daughters, but only three daughters survived to adulthood. Two became nuns at the Abbotsford Convent and one daughter, Cecelia Mary Gaunt (died 28 July 1941), married William Stanislaus Spillane on 22 September 1886 and had a large family. Gaunt died at his home in Coburg, Victoria, leaving an estate valued at ₤41,453. The business continued as T. Gaunt & Co. after his death. Post Office and Clock History: Warrnambool’s Post Office has been in existence since 1857, when it was originally situated on the corner of Timor and Gilles Street. In March 1864 the Warrnambool Borough Council purchased this clock from Henry Walsh Jnr. for the sum of £25, “to be put up in front of the Post Office”. Henry Walsh Jnr was the eldest son of Melbourne’s Henry Walsh, maker and retailer of clocks, watches, thermometers and jewellery. In 1854 Henry Walsh Jnr. began business in Warrnambool as a watchmaker and jeweller later becoming a Councillor with now a local street named after him. The Post Office was extensively remodelled in 1875-76. Early photographs of this building show that the clock was installed on the northern outside wall, Timor Street, under the arches and between the 2 centre windows, where it could be seen by passers-by. Although spring loaded clocks date back to the 15th century, and fob and pocket watches evolving from these date to the 17th century, personal pocket watches were only affordable to the very fortunate. Public clocks such as this Post Office clock provided opportunity for all to know the time, and for those in possession of a personal watch to check and set their own timepieces to the correct time. During post office reservations during the 1970s the clock was removed and was eventually donated to the Flagstaff Collection. The Clock’s maker Thomas Gaunt, is historically significant and was an established and well renowned scientific instrument and clock maker in Melbourne during the 1860s. He was at that time the only watchmaker in the Australian colonies. In the 1870’s and 1880’s he won many awards for his clocks and was responsible for sending time signals to other clocks in the city and rural areas, enabling many businesses and organisations to accurate set their clocks each day. Warrnambool Borough Council purchased this clock from Henry Walsh Jnr. for the sum of £25 and the clock used to stand in front of the Warrnambool post office to allow ordinary citizens to set their time pieces as they walked by. The item is not only important because it was made by a significant early colonial clock maker and retailed by a locally known clock maker and jeweler but also that it was installed in the Warrnambool Post Office a significantly historical building in it's own right. Built in 1857 and regarded as one of the oldest postal facilities in Australia, with a listing on the National Heritage Database, (ID 15656). This 1864 hall clock originates from the Warrnambool Post Office. The clock glass is hinged to the top of the clock face and has a catch at the bottom. The metal rim of the glass is painted black. The clock face is metal, painted white, with black Roman numerals and markings for minutes and five minutes. The tip of the small hour hand is shaped like a leaf. "T. GAUNT / MELBOURNE" is printed in black on the clock face. The winding key hole is just below the centre of the clock face. The key winds a fusee chain mechanism, attached to the brass mainspring barrel that powers the pendulum with an 8-day movement. The speed of the clock can be adjusted by changing the position of the weight on the pendulum, lengthening or shortening the swing; raising the pendulum shortens its swing and speeds up the clock. The metal fusee mechanism has an inscription on it. The rectangular wooden casing is with a convex curve at the bottom that has a hinged door with a swivel latch. The original stained surface has been painted over with a matte black. There are two other doors that also allow access to the clock’s workings. The case fits over the pendulum and workings at the rear and attaches to the clock by inserting four wooden pegs into holes in the sides of the case then into the back of the clock. A flat metal plate has been secured by five screws onto the top of the case and a hole has been cut into it for the purpose of hanging up the clock. There is a nail inside the case, possibly used for a place to the key."T. GAUNT MELBOURNE" is printed on the clock face. “6 1 3” embossed on the back of the fusee mechanism behind the clock. warrnambool, shipwrecked coast, flagstaff hill, flagstaff hill maritime museum, maritime museum, shipwreck coast, flagstaff hill maritime village, shipwrecked artefact, clock, warrnambool post office, fusee, henry walsh jnr, thomas gaunt, t gaunt & co, post office clock

This Sike’s Hydrometer was donated by the Port Fairy Customs Office as it was no longer required by them due to a change in the law. The hydrometer was part of a system for Ullaging or calculating the amount of liquid remaining in a container of liquor such as a barrel, and the amount of alcoholic content in the contents. It can also measure the free space or head space remaining. Hydrometers were used to measure the density, or relative density, of liquids from the late 1600s. In 1816 Bartholomew Sikes won the competition for the most useful accurate hydrometer. Hydrometers were commonly used by distillers, vintners, and brewers to establish accurate measures of alcohol concentration in their beverages. Following this manufacturing process, government inspectors and excise officers used them to check that the labelled indications of alcohol-proof were correct and that the right amounts of duty were being paid.The Sikes hydrometer is of local significance because of its association with the Government's Customs Office in Port Fairy, in the southwest region of Victoria. It is also associated with Bartholomew Sikes, whose design of a hydrometer was chosen in 1816 as being the most useful and accurate hydrometer. The hydrometer has evolved into the digital version available today to measure density of liquids.Sikes Hydrometer and thermometer in a fitted wooden case with crimson lining inside the lid and dark lining in the base. The case has ten vertical pegs to secure the weights. The brass hydrometer has a spherical float and eight thick brass horseshoe-shaped weights. The serial number is on each section of the float and all weights. Both sides of the float’s upper flat stem have a scale from 0-10, with five divisions between each number. The eight weights are numbered from 20 – 90 in increments of 10. The set includes a mercury thermometer mounted on an ivory back plate labelled with Fahrenheit and Centigrade Scales. The Sikes hydrometer set was made by Loftus of London. The hydrometer model is IID 510, Serial Number is 14674, calibrated by Longs, London. All parts of the float and eight weights are inscribed with Serial Number “14674” The float stem is stamped "SIKE'S IID 51o” Calibrator, "LONG LITTLE TOWER ST LONDON" The weights are numbered individually ”20”, “30”, “40”, “50”, “60”, “70”, “80” or “90” Each weight in inscribed; symbol “(J L) [inside an ova, with textured background]” The thermometer inscribed: “LOFTUS OF LONDON”flagstaff hill, warrnambool, shipwrecked coast, flagstaff hill maritime museum, maritime museum, shipwreck coast, flagstaff hill maritime village, great ocean road, measuring instruments, customs tax, weighing instrument, sike’s hydrometer, calibrator long of london, loftus of london instrument maker, loftus, j long, sikes hydrometer, scientific instrument, pressure measurement, measuring instrument, ullage tool, customs, excise duty, tax, alcohol content, proof, calibrate, standard weights and measures, tariff, scientific instrument makers, specific gravity, liquid density, alcohol testing, technology, alcohol measurement, proof spirit, wine and spirits merchants, local business, brass measuring instrument, port fairy, customs office, port fairy customs, joseph long, instrument maker

This large compass is well made. It is now pitted and scratched, indication much use. Compasses were used to measure and mark out the head of the barrel by coopers. Very large compasses were used by block, spar and pump makers to help shave off angles left by axes and other tools on mast sides. Also they were used by blacksmiths in their work draftsmen, carpenters, engineers and navigators.This compass is an example of a drawing instrument that could have been used in the 19th and early 20th century by coopers and blacksmiths as well as navigators and ship smiths.Compass; large metal compass, 90-degree angle, two pointed arms hinged at the top. Inscription on the top of one arm.Stamped into the metal " J J E " ( or J J F )flagstaff hill, warrnambool, maritime village, maritime museum, flagstaff hill maritime museum & village, shipwreck coast, great ocean road, compass, drawing instrument, measuring instrument, scientific instrument, draftsman, technical drawing, navigation, engineering, blacksmith, cooper, plumber

The theodolite was sold by T. Gaunt & Co. of Melbourne, a manufacturer, importer and retailer of a wide variety of goods including jewellery, clocks and watches, navigational and measuring instruments, dinnerware, glassware and ornaments. Thomas Gaunt photograph was included in an album of security identity portraits of members of the Victorian Court, Centennial International Exhibition, Melbourne, 1888. (See further details below.) History for Troughton & Simms: Edward Troughton & William Simms established a scientific instrument making business in London in 1826. Edward Troughton (1756-1835) had previously had his own scientific instrument business, inherited from his father. His achievement's included a transit telescope for Greenwich Observatory (1816) and the precision surveying instruments for the Ordnance Survey of Britain, Ireland and India. William Simms (1793-1860) had trained as a goldsmith and began to gain work dividing circles on fine astronomical instruments. When William Simms died in 1860, the business was taken over by his son James and nephew William. Troughton & Simms shop in Fleet Street became the hub of the finest scientific instrument made in London, in a period in which there was an expanding demand for precision instruments, for astronomy, surveying and precision measurement. They made instruments for Greenwich Observatory, for imperial surveys and exploring expeditions. When fire destroyed the Houses of Parliament in 1834, the firm was commissioned to create new standard lengths, this required 10 years of testing against the remaining old measurements. Troughton and Simms made several of the main instruments for Melbourne Observatory, including an 18 inch azimuth used of the Geodetic Survey, portable transit instrument (circa 1850), zenith sector (1860), a 4.5 inch equatorial telescope (1862), an 8 inch equatorial telescope (1874) spectroscope (1877) and an 8 inch transit instrument in (1884). While the firm had an excellent reputation for quality the company exasperated many of its customers with delays of years in delivering some instruments. History for Thomas Gaunt: Thomas Ambrose Gaunt (1829 – 1890) was a jeweller, clock maker, and manufacturer of scientific instruments, whose head office and showroom were at 337–339 Bourke Street, Melbourne, Victoria, Australia. Thomas Gaunt established Melbourne's leading watchmaking, optical and jewellery business during the second half of the 19th century. Gaunt arrived in Melbourne in 1852, and by 1858 had established his own business at 14 Little Bourke Street. Around 1869 he moved to new premises in Bourke Street on the corner of Royal Arcade, Gaunt's shop quickly became a Melbourne institution. Gaunt proudly advertised that he was 'The only watch manufacturer in the Australian colonies'. While many watches and clocks may have had Gaunt's name on the dial, few would have been made locally. Gaunt did make some watches for exhibitions, and perhaps a few expensive watches for wealthy individuals. Gaunt's received a telegraph signal from Melbourne Observatory each day to correct his main clock and used this signal to rate and repair ship's chronometers and good quality watches. Thomas Gaunt also developed a department that focused on scientific instrumentation, making thermometers and barometers (from imported glass tubes), telescopes, surveying instruments and microscopes. Significance: With the rapid urban expansion, one of the most important needs of the new colony was to survey and map the landscape of the Australian Colony’s interior. Theodolites, such as this one, made by Troughton and Simms, who were significant scientific instrument makers of the 19th century were instrumental to the colony's surveyors and would have played an important part in their everyday work. This transit theodolite remains of national significance due to its pioneering role in Australian science and its association with Australia's earliest surveyors and astronomers. It is also significant for its association with nineteenth-century surveying instruments and instrument makers. Theodolite, Vernier repetition theodolite with enclosed horizontal circle (of about 130 mm diameter). Vertical circle exposed and somewhat corroded (diameter about 115 mm). Plate level 20" per division. Altitude bubble 20" per division. Horizontal and vertical circle intervals 20". Original (blue/grey) paint. Altitude bubble setting screw disabled. Tribrach allows movement of theodolite by 15 mm inside tribrach (for centering).Inscribed on the inner mounting plate,“Specially made in England for T Gaunt & Co Melbourne” and inscribed a little lower “Troughton & Simms London”flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, theodolite, t. gaunt & co, troughton & simms, scientific instrument, measuring instrument, surveyor's instrument

In 1941, the scientific instrument manufacturing firms of  Henry Hughes & Son Ltd, London, England, and  Kelvin Bottomley & Baird Ltd, Glasgow, Scotland, came together to form Kelvin & Hughes Ltd. Kelvin Company History: The origins of the company lie in the highly successful and strictly informal relationship between William Thomson (1824-1907), Professor of Natural Philosophy at Glasgow University from 1846-1899 and James White, a Glasgow optical maker. James White (1824-1884) founded the firm of James White, an optical instrument maker in Glasgow in 1850 and was involved in supplying and mending apparatus for Thomson university laboratory and working with him on experimental constructions. White was declared bankrupt in August 1861 and released several months later. In 1870, White was largely responsible for equipping William Thomson laboratory in the new University premises at Gilmore hill. From 1876, he was producing accurate compasses for metal ships to Thomson design during this period and this became an important part of his business in the last years of his life. He was also involved in the production of sophisticated-sounding machinery that Thomson had designed to address problems encountered laying cables at sea, helping to make possible the first transatlantic cable connection. At the same time, he continued to make a whole range of more conventional instruments such as telescopes, microscopes and surveying equipment. White's association with Thomson continued until he died. After his death, his business continued under the same name, being administered by Matthew Edwards (until 1891 when he left to set up his own company. Thomson who became Sir William Thomson and then Baron Kelvin of Largs in 1892, continued to maintain his interest in the business after James White's death. In 1884 raising most of the capital needed to construct and equip new workshops in Cambridge Street, Glasgow. At these premises, the company continued to make the compass Thomson had designed during the 1870s and to supply it in some quantity, especially to the Admiralty. At the same time, the firm became increasingly involved in the design, production and sale of electrical apparatus. In 1899, Lord Kelvin resigned from his University chair and became, in 1900, a director in the newly formed limited liability company Kelvin & James White Ltd which had acquired the business of James White. At the same time Kelvin's nephew, James Thomson Bottomley (1845-1926), joined the firm. In 1904, a London branch office was opened which by 1915 had become known as Kelvin, White & Hutton Ltd. Kelvin & James White Ltd underwent a further change of name in 1913, becoming Kelvin Bottomley & Baird Ltd. Hughes Company History: Henry Hughes & Sons were founded in 1838 in London as a maker of chronographic and scientific instruments. The firm was incorporated as “Henry Hughes & Sons Ltd” in 1903. In 1923, the company produced its first recording echo sounder and in 1935 a controlling interest in the company was acquired by S Smith & Son Ltd resulting in the development and production of marine and aircraft instruments. Following the London office's destruction in the Blitz of 1941, a collaboration was entered into with Kelvin, Bottomley & Baird Ltd resulting in the establishing “Marine Instruments Ltd”. Following the formal amalgamation of Kelvin, Bottomley & Baird Ltd and Henry Hughes & Sons Ltd in 1947 to form Kelvin & Hughes Ltd. Marine Instruments Ltd then acted as regional agents in the UK for Kelvin & Hughes Ltd who were essentially now a part of Smith's Industries Ltd founded in 1944 and the successors of S. Smith & Son Ltd. Kelvin & Hughes Ltd went on to develop various marine radar and echo sounders supplying the Ministry of Transport, and later the Ministry of Defence. The firm was liquidated in 1966 but the name was continued as Kelvin Hughes, a division of the Smiths Group. In 2002, Kelvin Hughes continues to produce and develop marine instruments for commercial and military. G. Falconer Company History: G Falconer (Hong Kong Ltd) appear to have had a retail presence in Hong Kong since 1885, according to the company website, and currently have a shop in the Peninsula Hotel. G Falconer was the Hong Kong selling agent for several British companies. Ross Ltd of 111 New Bond St London was one and the other was Kelvins Nautical Instruments. Falconers were primarily watchmakers, jewellers and diamond merchants.They were also agents for Admiralty Charts, Ross binoculars and telescopes, and sold English Silverware and High Class English Jewellery. In 1928 the company was operating from the Union Building opposite the Hong Kong general post office. It is unclear if the item is an original Sextant made by Kelvin prior to his amalgamation with Henry Hughes & Sons in 1941 as Kelvin appears to have only made compasses up to this date. If the Sextant can be established that it was made by Kelvin then it is very significant and a rare item made for and distributed through their Hong Kong selling agents G Falconer Ltd. There are many Sextants advertised for sale stating "Kelvin & Hughes 1917 model sextant". These can be regarded as replicas as the company was not formed until 1941 and production of marine instruments was not fully under way until after the war in 1947. Further investigation needs to be undertaken to accurately determine the provenance of this item. As the writer currently has the impression that the subject object was possibly made by Kelvin and Hughes in the mid to late 20th century or is a replica made by an unknown maker in the late 1970s. Purchased as an exhibition of marine navigational instruments for the Flagstaff Hill museum. The Sextant is a brass apparatus with filters and telescope lens, and comes with a wooden felt lined storage box. It is a doubly reflecting navigation instrument that measures the angular distance between two visible objects. The primary use of a sextant is to measure the angle between an astronomical object and the horizon for the purposes of celestial navigation.G Falconer and Co. Hong Kong (retailers of nautical equipmentflagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, sextant, kelvin & hughes ltd, hong kong, navigational instrument, g falconer, mariner's quadrants

Navigators use parallel rule with maps and charts for plotting a specific course on a chart. One long edge is used with the compass rose on the chart, aligning the centre of the rose with the desired direction around the edge of the rose. The compass bars are then ‘walked’ in and out across the map to the desired location so that lines can be plotted to represent the direction to be travelled. Kelvin Company History: The origins of the company lie in the highly successful and strictly informal relationship between William Thomson (1824-1907), Professor of Natural Philosophy at Glasgow University from 1846-1899 and James White, a Glasgow optical maker. James White (1824-1884) founded the firm of James White, an optical instrument maker in Glasgow in 1850 and was involved in supplying and mending apparatus for Thomson university laboratory and working with him on experimental constructions. White was declared bankrupt in August 1861 and released several months later. In 1870, White was largely responsible for equipping William Thomson laboratory in the new University premises at Gilmore hill. From 1876, he was producing accurate compasses for metal ships to Thomson design during this period and this became an important part of his business in the last years of his life. He was also involved in the production of sophisticated sounding machinery that Thomson had designed to address problems encountered laying cables at sea, helping to make possible the first transatlantic cable connection. At the same time, he continued to make a whole range of more conventional instruments such as telescopes, microscopes and surveying equipment. White's association with Thomson continued until he died. After his death, his business continued under the same name, being administered by Matthew Edwards until 1891 when he left to set up his own company. Thomson who became Sir William Thomson and then Baron Kelvin of Largs in 1892, continued to maintain his interest in the business after James White's death in 1884, raising most of the capital needed to construct and equip new workshops in Cambridge Street, Glasgow. At these premises, the company continued to make the compass Thomson had designed during the 1870s and to supply it in some quantity, especially to the Admiralty. At the same time, the firm became increasingly involved in the design, production and sale of electrical apparatus. In 1899, Lord Kelvin resigned from his University chair and became, in 1900, a director in the newly formed limited liability company Kelvin & James White Ltd which had acquired the business of James White. At the same time Kelvin's nephew, James Thomson Bottomley (1845-1926), joined the firm. In 1904, a London branch office was opened which by 1915 had become known as Kelvin, White & Hutton Ltd. Kelvin & James White Ltd underwent a further change of name in 1913, becoming Kelvin Bottomley & Baird Ltd. Hughes Company History: Henry Hughes & Sons were founded in 1838 in London as a maker of chronographic and scientific instruments. The firm was incorporated as “Henry Hughes & Sons Ltd” in 1903. In 1923, the company produced its first recording echo sounder and in 1935 a controlling interest in the company was acquired by S Smith & Son Ltd resulting in the development and production of marine and aircraft instruments. Following the London office's destruction in the Blitz of 1941, a collaboration was entered into with Kelvin, Bottomley & Baird Ltd resulting in the establishing “Marine Instruments Ltd”. Following the formal amalgamation of Kelvin, Bottomley & Baird Ltd and Henry Hughes & Sons Ltd in 1947 to form Kelvin & Hughes Ltd. Marine Instruments Ltd then acted as regional agents in the UK for Kelvin & Hughes Ltd who were essentially now a part of Smith's Industries Ltd founded in 1944 and the successors of S Smith & Son Ltd. Kelvin & Hughes Ltd went on to develop various marine radar and echo sounders supplying the Ministry of Transport, and later the Ministry of Defence. The firm was liquidated in 1966 but the name was continued as Kelvin Hughes, a division of the Smiths Group. In 2002, Kelvin Hughes continues to produce and develop marine instruments for commercial and military. This model parallel map ruler is a good example of the commercial diversity of navigational instruments made by Kelvin & Hughes after World War II. It was made in numbers for use by shipping after the second world war and is not particularly rare or significant for it's type. Also it was made no earlier than 1947 as the firms of Kelvin, Bottomley & Baird Ltd and Henry Hughes & Sons Ltd who took over from Smith & Sons were not amalgamated until 1947. It can therefor be assumed that this ruler was made during the company's transitional period to Kelvin & Hughes from Smith Industries Ltd.Brass parallel rule in wooden box with blue felt lining.Rule inscribed on front "Kelvin & Hughes Ltd" " Made in Great Britain"flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, parallel rule, kelvin & hughes ltd, map ruler, plot direction, navigation, maps, echo sounder, kelvin & james white, lord kelvin, baron kelvin of largs, scientific instrument

A sextant is an astronomical instrument used to determine latitude and longitude at sea by measuring angular distances, especially the altitudes of the sun, moon, and stars. It is a doubly reflecting navigation instrument and used mainly by sailors to measure the angular distance between two visible objects. The name comes from the Latin sextans, or “sixth part of a unit,” because the sextant’s arc can be 60° or 120° of a circle depending on the model used. The primary use was to measure the angle between an astronomical object and the horizon for the purposes of celestial navigation. The estimation of this angle is known as sighting or shooting the object, or taking a sight. This angle and the time when it was measured is used in order to determine Greenwich Mean Time and hence longitude. Sighting the height of a landmark on land can also give a measure of distance from that object. History: The development of the sextant was as an improvement over the octant, an instrument designed to measure one's latitude. The octant was first implemented around 1731-present but can only measure angles up to 45°. As larger angles were needed to allow the measurement of lunar objects - moon, stars and the sun - at higher angles, the octant was superseded by the sextant. The sextant is a similar instrument but better made and allows larger angles from 60° to 120°. This improvement allows distances to be accurately calculated thereby giving longitude when used with a chronometer. The sextant was derived from the octant in 1757, eventually making all previous instruments used for navigational positioning obsolete. The sextant had been attributed to by John Hadley (1682–1744) and Thomas Godfrey (1704–1749), but reference to the sextant was also found later in the unpublished writings of Isaac Newton (1643–1727). Earlier links can be found to Bartholomew Gosnold (1571–1607) indicating that the use of a sextant for nautical navigation predates Hadley's implementation. In 1922, the sextant was modified for aeronautical navigation by Portuguese navigator and naval officer Gago Coutinho. It should be noted that the octant and quadrant are in the same family as they were, and all are, regarded as sextants. The sextant is representative of it's type and although not fully complete it demonstrates how 18th,19th and 20th century mariners determined their latitude and longitudinal to determine their position on a chart, allowing them to navigate there way across the world's oceans. It also demonstrates the skill and workmanship of the early instrument makers that operated scientific instrument businesses from London and other areas of England to provide most of the navigational instrumentation used by commercial and military navies of the time.Sextant with square, fitted box of polished wood, "Hezzanith" brand. Box contains many parts for the sextants use. On certificate "Heath & Co, London. Sextant Number Y 822". Catch on lid "DEFIANT LEVER" and "PATENT NUMBER 187.10". Maker's certificate is attached to the inside of the box.flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, sextant box, sextant, hezzanith, heath & co, navigational instrument, george wilson heath, astronomical instrument, instrument manufacturers, scientific instrument, navigation, celestial navigation, octant, quadrant, lunar navigation

History/Context: In 1947, the scientific instrument manufacturing firms of  Henry Hughes & Son Ltd, London, England, and  Kelvin Bottomley & Baird Ltd, Glasgow, Scotland, came together to form Kelvin & Hughes Ltd. Hughes Company History: Henry Hughes & Sons were founded in 1838 in London as a maker of chronographic and scientific instruments. The firm was incorporated as “Henry Hughes & Sons Ltd” in 1903. In 1923, the company produced its first recording echo sounder and in 1935 a controlling interest in the company was acquired by S Smith & Son Ltd resulting in the development and production of marine and aircraft instruments. Following the London office's destruction in the Blitz of 1941, a collaboration was entered into with Kelvin, Bottomley & Baird Ltd resulting in the establishing “Marine Instruments Ltd”. Following the formal amalgamation of Kelvin, Bottomley & Baird Ltd and Henry Hughes & Sons Ltd in 1947 to form Kelvin & Hughes Ltd. Marine Instruments Ltd then acted as regional agents in the UK for Kelvin & Hughes Ltd who were essentially now a part of Smith's Industries Ltd founded in 1944 and the successors of S. Smith & Son Ltd. Kelvin & Hughes Ltd went on to develop various marine radar and echo sounders supplying the Ministry of Transport, and later the Ministry of Defence. The firm was liquidated in 1966 but the name was continued as Kelvin Hughes, a division of the Smiths Group. In 2002, Kelvin Hughes continues to produce and develop marine instruments for commercial and military use. (See Note section this document for further information on the company's origins)This model parallel map ruler is a good example of the commercial diversity of navigational instruments made by Kelvin & Hughes after world war 2. It was made in numbers for use by shipping after the second world war and is not particularly rare or significant for its type. Also, it was made no earlier than 1947 as the firms of Kelvin, Bottomley & Baird Ltd and Henry Hughes & Sons Ltd who took over from Smith & Sons were not amalgamated until 1947. It can there for be assumed that this ruler was made during the company's transitional period to Kelvin & Hughes from Smith Industries Ltd.Metal parallel rule with Kelvin & Hughes Ltd, Made in Great Britain imprinted, numerous measurements, two handles and 3 hinges.flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, parallel rule, kelbin & hughes ltd, metal parallel rule