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were needed to allow the measurement of lunar objects - moon, stars and the sun - at higher angles, the octant was superseded by the sextant.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to by John Hadley (1682–1744) and Thomas Godfrey (1704–1749), but reference to the sextant was also found later in the unpublished writings of Isaac Newton (1643–1727).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

Henry Browne and Son Ltd, of Barking, made aviation and nautical compasses, clocks and dials. The company made compasses for aircraft notably, Spitfires, Tiger moths and Concord. Henry Browne was born in Lewis, Sussex in 1842 and died in Barking in 1935. His company was a well respected English instrument maker that had been making and selling fine quality compasses, ship's clocks, inclinometers, sextants, and chandlery items for over 140 years. It started in a factory in Brightlingsea, Essex and moved to Barking in 1929. The Trade Mark brand Sestrel was used on all their equipment. Their “Dead Beat“ compass design is well dampened serving to reduce oscillations. It is reported that this design compass was fitted to many Allied ships during WW II. The company went through a boom period in the 1970s but collapsed in the 1980s due to the popularity of cheaper plastic compasses over tradition brass ones. Over more recent years, there has been a consolidation of British instrument makers and the firm of Henry Browne & Son has changed hands a number of times. At last count, it became part of Lillie & Gillie of London in 1985 when John Lilley & Gillie Ltd acquires the assets of Henry Browne & Sons (Sestrel) Ltd, a major competitor for what may be the second time. The model name of Sestral came about via the following.Take first two letters of the word Sensitive then the firs two letter of steady and the firs three letters of reliable hence the trade name of "Sestral". Item relates to the second world war used in many ships of the time merchant and military, It reminds us of a time in our social and world history when most of the world was in conflict.Henry Browne and Sons “Dead Beat“ compass design is well dampened serving to reduce oscillations and was an innervation that many makes of compass of the time din't have as a result the "Sestrel" design was fitted to many Allied ships during WW II.A liquid-filled Sestrel compass, with a brass housing and gimbal ring, wired for an internal low voltage light to illuminate the compass card. Inscriptions printed on face and impressed in metal around outer rim TRADE MARK", "Sestrel Dead-Beat", "No 1724 N", "Barking & London" HENRY BROWNE & SON", additional inscription "AFT No 1724 N". flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, compass, marine compass, henry browne & son barking london, sestrel dead-beat marine compass, navigation instrument, sestrel dead-beat marine compass

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 theatergoers.Not very significant as not associated with a historic event or person and made during the first half of the 20th Century and many are still available and easily sourced.Vintage Pair of Opera Glasses, with cow bone barrels and eyepieces, both barrel pieces have split in them, both metal end barrels each have a minor dent, optics are pretty clear no mould although have very minor dust spots inside, they look like they were gilded at some point but most of this has rubbed off glasses have a black leather case with blue lining. No markings whatsoever anywhereflagstaff hill, warrnambool, shipwrecked coast, flagstaff hill maritime museum, maritime museum, shipwreck coast, flagstaff hill maritime village, great ocean road, binoculars, opera glasses, theatre glasses, optical instrument, cow bone

Candle holder, decorative brass concertina, extends and pivots, with securing clampflagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, candle holder

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

Case, brown leather carrying case with securing straps and metal buckle, cloth lining. Label "Canada Pacific" and "B" and "F" on front. "WHE" printed on lid. flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, case, canada pacific

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

A barometer is an instrument used for measuring atmosphere pressure thus determining weather changes.The first apparatus generally accepted as a barometer was that set up in Florence in 1644 by Evangelista Torricelli (1608–1647), a mathematician and physicist. Torricelli filled a glass tube with mercury, sealed it at one end, and inverted it with its open end in a dish of mercury. The level always fell a short way down the tube, then settled at a height of about thirty inches. He concluded correctly that the mercury column was sustained by the weight of the air pressing on the open surface of mercury, and further experiments convinced him that the space above the mercury in the tube was a vacuum. He noted that the level rose and fell with changing temperature, but he was unable to use his apparatus to measure variations in the weight of the atmosphere because he had not foreseen that temperature would affect the level of the mercury. News of this experiment circulated quickly among European scientists, who hastened to replicate the experiment. Torricelli's conclusions were not universally accepted because some disputed whether the air had weight, while both Aristotle and the Catholic Church denied the possibility of a vacuum. In France, the philosopher René Descartes (1596–1650) seems to have been the first person, probably in 1647, to attach a graduated scale to the tube so that he could record any changes attributable to the weather. At around this time Duke Ferdinand II of Tuscany organized the first short-lived meteorological network among scientists in other Italian cities, gathering observations of pressure, temperature, humidity, wind direction, and state of the sky.Theis barometer is an example of a household item from the early 20th century, used to determine the day's weather. The barometer is significant as an aid to human social, material and scientific development.Barometer, round, brass housing inset into carved wooden casing (lacquer mostly worn off). Decorative lettering for weather conditions "Stormy, Rain, Change, Fair, Very Dry". Workings are visible through opening in centre of dial. Indicator needle and another adjustable needle . Hook screwed into back of case.flagstaff hill, warrnambool, shipwrecked coast, flagstaff hill maritime museum, maritime museum, shipwreck coast, flagstaff hill maritime village, great ocean road, barometer, scientific instrument, weather forcasting instrument, weather gauge

The nautical compass is used for determining directions, using a free moving magnetised needle, indicating north and south. This is a medium sized compass and was suitable for mounting in a fixed brass binnacle or a portable wooden box. The compass fluid was typically lamp oil, or a mixture of alcohol and water. This compass, based on its pattern, was probably manufactured around the 1930s. The compass’s maker, Bergen Nautik, was a 20th Century compass manufacturer, making compasses from the 1900s but no longer in business.The factory was located in Hordaland County, Bergen, on the west coast of Norway. This compass is not a very significant marine item as it was made in the 20th century. Examples of the same compass that have been salvaged can be purchased today mounted either in a wooden box or a brass pedestal.Compass; marine or ship's compass, brass, gimbal mounting, in blue metal casing. Manufacturer’s inscription is on the face. Made by Bergen Nautik of Bergen in Norway. Circa 1930s."BERGEN . NAUTIK", "BERGEN", "NORWAY" flagstaff hill, warrnambool, shipwrecked coast, flagstaff hill maritime museum, maritime museum, shipwreck coast, flagstaff hill maritime village, great ocean road, compass, nautical compass, marine compass, maritime compass, technical instrument, navigation instrument, bergen nautik, 20th-century marine compass, gimbal compass, ship's compass, bergan nautik, norway, 1930s marine compass

This sextant is very similar to a 1915 Sextant design. A sextant is an astronomical instrument used in measuring angular distances especially the altitudes of sun, moon and starts at sea determining latitude and longitude.This sextant is an example of a 19th-century marine instrument used for finding location at sea. It was made by London scientific instrument maker Troughton and Simms, which originated in 1826 and continued until 1922.Sextant and its fitted square wooden box. The handle of the sextant is carved with a cross-hatched pattern. Made by Troughton and Simms, London.flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, sextant, navigational instrument, marine navigation, marine equipment, instrument, navigation, troughton and simms, london, scientific instrument

In 1792 John Manners had set up a workshop making woodworking planes at 14 Saracens Lane Glasgow. He also had employed an apprentice Alexander Mathieson (1773-1851). But in the following year at Saracen's Lane, the 1841 census describes Alexander Mathieson as a master plane-maker now at 38 Saracen Lane with his son Thomas Adam working with him as a journeyman plane-maker. Presumably, Alexander must have taken over the premises and business of John Manners.  Now that the business had Thomas Adam Mathieson working with his father it gradually grew and became more diversified, and it is recorded at the time by the Post-Office Glasgow Annual Directory that by 1847/8 Alexander Mathieson was a "plane, brace, bit, auger & edge-tool maker". In 1849 the firm of James & William Stewart at 65 Nicolson Street, Edinburgh was taken over and Thomas was put in charge of the business, trading under the name Thomas A. Mathieson & Co. as plane and edge-tool makers. Thomas's company went on to acquire the Edinburgh edge-tool makers “Charles & Hugh McPherson” and took over their premises in Gilmore Street. In the Edinburgh directory of 1856/7, the business is recorded as being Alexander Mathieson & Son, plane and edge-tool makers at 48 Nicolson Street and Paul's Work, Gilmore Street Edinburgh. The 1851 census Alexander is recorded as working as a tool and plane-maker employing eight men. Later that year Alexander died and his son Thomas took over the business. Under the heading of an edge-tool maker in the 1852/3 Post-Office Glasgow Annual Directory the firm is now listed as Alexander Mathieson & Son, with further entries as "turning-lathe and vice manufacturers". By the early 1850s, the business had moved to 24 Saracen Lane. The directory for 1857/8 records that the firm had moved again only a few years later to East Campbell Street, off the Gallowgate area, and that through further diversification was also manufacturing coopers' and tinmen's tools. The ten-yearly censuses report the firm's growth in 1861 stating that Thomas was a tool manufacturer employing 95 men and 30 boys; in 1871 he had 200 men working for him and in 1881 300 men. By 1899 the firm had been incorporated as Alexander Mathieson & Sons Ltd, even though only Alexander's son Thomas appears ever to have joined the firm so the company was still in his fathers' name. In September 1868 Thomas Mathieson put a notice in the newspapers of the Sheffield & Rotherham Independent and the Sheffield Daily Telegraph stating that his firm had used the trade-mark of a crescent and star "for some time" and that "using or imitating the Mark would be proceeded against for infringement". The firm had acquired its interest in the crescent-and-star mark from the heirs of Charles Pickslay, the Sheffield cutler who had registered it with the Cutlers' Company in 1833 and had died in 1852. The year 1868 seems also to be the one in which the name Saracen Tool Works was first adopted; not only does it figure at the foot of the notice in the Sheffield press, it also makes its first appearance in the firm's entry in the Post-Office Glasgow Annual Directory in the 1868/9 edition. As Thomas Mathieson's business grew, so too did his involvement in local public life and philanthropy. One of the representatives of the third ward on the town council of Glasgow, he became a river bailie in 1868, a magistrate in 1870 and a preceptor of Hutcheson's Hospital in 1878. He had a passion for books and was an "ardent Ruskinian". He served on the committee handling the bequest for the setting up of the Mitchell Library in Glasgow. When he died at Coulter Maynes near Biggar in 1899, he left an estate worth £142,764.  Company's later years: Both Thomas's sons, James Harper and Thomas Ogilvie were involved in the continuing life of the firm. James followed in his father's footsteps in becoming a local public figure. He was appointed Deputy Lieutenant of the County of the City of Glasgow and was made a deacon of the Incorporation of the Hammermen of Glasgow in 1919. His brother Thomas Ogilvie was recorded as tool manufacturer and employer in the 1911 census. Thomas Ogilvie's son Thomas Alastair Sutherland Ogilvie Mathieson was born in 1908 took a rather different approach to engineering, however, by becoming a racing driver. In 1947 he wed the French film actress Mila Parély. The firm had won many awards at world fairs for their goods. At the Great Exhibition, London, 1851. Prize medal for joiners' tools in the class of Cutlery & Edge Tools, Great London Exposition, 1862. Prize medal honoris causa. International Exhibition, Melbourne, 1880. Gold medal International Exhibition of Industry, Science and Art, Edinburgh, 1886. Prize medalThe firm of Alexander Mathieson & Sons was one of the leading makers of hand tools in Scotland. Its success went hand in hand with the growth of the shipbuilding industries on the Firth of Clyde in the nineteenth century and the emergence of Glasgow as the "second city of the Empire". It also reflected the firm's skill in responding to an unprecedented demand for quality tools by shipyards, cooperage's and other industries, both locally and far and wide.Spirit level, brass in ebony wooden casing.Has "18C Warranted" stamped on barrel.flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, spirit level, level, mathieson of glasgow, builders level, spirit level, alexander mathieson & sons, tool maker, wood working plane, john manners, thomas adam mathieson, james & william stewart, james harper, thomas ogilvie, machine manufacturer

The company was established in 1859 by Alfred Charles Cossor following a period of apprenticeship by the founder as a glass blower, Having gained a high reputation for his skills and the quality of his products, the founder was joined by his sons Alfred Charles in 1875 and then by his younger son Frank in 1885. In 1904 Accoson produced their first glass manometer, using their glass blowing skills, known as the sphygmomanometer. A year later Russian surgeon Nikolai Korotkoff first described the technique to measure diastolic pressure. In 1921 Frank Cossor was joined by his son Frank Gordon Cossor and the company expanded its products to include all types of thermometers, hydrometers and syringes. However, Sphygmomanometers became the main product of the company. When Adrian Cossor joined the company in 1966 he was the fourth generation to do so. Accoson was acquired by the HCE Medical Group in 2018 and relocated to new premises in Irvine, Scotland. An item made for the confectionery industries not very rare, but made by the company that invented and pioneered the blood pressure meter (sphygmomanometer) that is still in use today and an item we all have use when we have visited our doctor when our blood pressure is checked.Thermometer wooden casing with a metal tip. used for measuring temperature by the expansion and contraction of mercury or alcohol in a capillary tube and bulb. Inscription Made by ACCOSON, in England for B.M.I. Ltd.flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, thermometer, b.m.i. ltd, accoson, blood pressure

Wooden parallel rule with 3 copper hinges. Chip of one end corner.flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village

Adams jnr wrote many elementary scientific works, as well as on the use of mathematical instruments. He often combined in his written works with religious themes and scientific content, often against the prevailing thoughts of the time. According to one popular magazine of the time (Gentleman's Magazine), his works were often accused of "growing errors of materialism, infidelity, and anarchy". He started writing at a young age and developed a love for it, his main interests included math and science, these subjects he often expressed in his written essay's. Notable works from Adams are. An Essay on Electricity, and Magnetism (1784). Essays on the Microscope (1787). An Essay on Vision, briefly explaining the fabric of the eye (1789). Astronomical and Geographical Essays (1790). A Short Dissertation on the Barometer (1790). Geometrical and Graphical Essays, containing a description of the mathematical instruments used in geometry, civil and military surveying, leveling and perspective (1790). Lectures on Natural and Experimental Philosophy, in five volumes (1794).George Adams Sr and Jnr were both notable opticians and scientific instrument makers of the 18th century. Their contribution to scientific innovation and optical development cannot be underestimated. Having one of their early drainage levels in the collection and in extremely good condition is an asset to the Flagstaff collection.Drainage level or optical level. A brass surveying instrument with Achromatic telescope, bubble level and dial fitted to the Tribrach or footplate that has leveling screws. Tripod is wood and brass with adjustable and unscrewable legs (for ease of transportation). Made by "G. Adams Fleet St, London". Used in surveying and building to transfer, measure and/or set horizontal levels."G. Adams - London".flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, george adams fleet street london, optical instrument, scientific instrument, technical instrument, surveyors level, george adams snr, projection microscope

This Dollond Day or Nigh telescope was designed to be used in any light conditions, as its name implies. Telescopes are optical instruments designed to make objects appear to be larger or closer. The discovery of the first telescope in 1608 can be attributed to Hans Lippershey of the Netherlands when he discovers that holding two lenses up some distance apart bring objects closer. He applies for a patent on his invention and this becomes the first documented creation of a telescope. Then in 1668, Newton produces the first successful reflecting telescope using a two-inch diameter concave spherical mirror. This opened the door to magnifying objects millions of times far beyond what could ever be obtained with a lens. It wasn’t until 1729 that Chester Moor Hall develops an achromatic lens (two pieces of glass with different indices of light refraction combined produce a lens that can focus colours to almost an exact point resulting in much sharper images but still with some distortion around the edges of the image. Then in 1729 Scottish instrument maker James Short invents the first parabolic and elliptic, distortion-less mirror ideal for reflecting telescopes. We now come to John Dollond who improves upon the achromatic objective lens by placing a concave flint glass lens between two convex crown glass lenses. This had the effect of improving the image considerably. Makers Information: John Dollond (1707-1761) London England he was a maker of optical and astronomical instruments who developed an achromatic (non-colour distorting) refracting telescope and practical heliometer. A telescope that used a divided lens to measure the Sun’s diameter and the angles between celestial bodies. The son of a Huguenot refugees Dollond learned the family trade of silk weaving. He became proficient in optics and astronomy and in 1752 his eldest son, Peter joined his father in an optical business, in 1753 he introduced the heliometer. In the same year, he also took out a patent on his new lenses. He was elected a fellow of the Royal Society in May 1761 but died suddenly in November and his share in the patent passed to his son Peter. In subsequent squabbles between Peter and the many London opticians who challenged his patent, Peter’s consistent position was that, whatever precedents there may have been to his achromatic lenses, his father had independently reached his practical technique on the basis of his theoretical command of Newtonian optics. As a result of maintaining his fathers patent, Dollond s became the leading manufacturer of optical instruments. For a time in the eighteenth and nineteenth century the word 'Dollond' was almost a generic term for telescope rather like 'Hoover; is to vacuum cleaner. Genuine Dollond telescopes were considered to be amongst the best. Peter Dollond (1731-1820) was the business brain behind the company which he founded in Vine Street, Spitalfields in 1750 and in 1752 moved the business to the Strand London. The Dollonds seem to have made both types of telescopes (reflecting and refracting), possessing the technology to produce significant numbers of lenses free of chromatic aberration for refracting telescopes. A Dollond telescope sailed with Captain Cook in 1769 on his voyage to observe the Transit of Venus. Thomas Jefferson and Admiral Lord Nelson were also customers of the Dollonds. Dollond & Co merged with Aitchison & Co in 1927 to form Dollond & Aitchison, the well-known high street chain of opticians, now fully part of Boots Opticians. They no longer manufacture but are exclusively a retail operation.    John Dollond's experiments in optics and how different combinations of lenses refract light and colour gave a better understanding of the divergent properties of lenses. That went on to inform and pave the way for the improvement of our understanding of optics that is represented today. Dollond was referred to in his time as the "Father of practical optics" as a leader in his field he received many prestigious awards. The telescope in the collection is a good example of one of Dollond's early library telescopes. Its connection with one of England's 18th century pioneers in optical development makes it a significant and an important item to have within the collection.Telescope: Dollond's Telescope, Day or Night model navigational instrument. Telescope is mounted on wooden tripod stand that has folding legs. Brass telescope with leather sheath over barrel, adjustable angle fitting with brass wing nuts that join the legs to the top frame, which is then joined to the telescope pole by an adjustable screw fitting. Manufactured by Dollond, London. Inscription reads "Dollond London, Day or Night" and "DOLLOND LONDON"flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, telescope, dollond, dollond london, day & night telescope, floor-standing telescope, optical instrument, john dollond, peter dollond, achromatic telescope, heliometer, light refraction, instrument maker, lens, transit of venus, astronomical telescope, concave lens, library telescope, dollond telescope, day or night, day or night telexcope, scientific instrument, navigation, navigational instrument, astronomy

The barometer 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. (See below for further details.) Admiral Fitzroy Pattern Barometer History: The stick mercury barometer was named after Admiral Robert Fitzroy of the Royal Navy (1805-1865) for his detailed instructions on how to interpret the weather, which were included with the instrument. Fitzroy was the captain of the HMS Beagle, also a weather forecaster to Charles Darwin and the second Governor of New Zealand. He developed many different types of barometers and was the first person to introduce the science of weather forecasting to the British Isles. A local manufacturer of scientific instruments, Thomas Gaunt, produced the barometer that was adapted for the southern hemisphere by Robert Ellery, the State Astronomer based at the Melbourne Observatory. In the original sale catalogue for Gaunt's, the item is described as "Gaunt's Fitzroy Barometers" and it was priced from 25/- to ₤9.9s. History of Thomas Gaunt: 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. The barometer is historically significant as an example of the work of Melbourne’s leading scientific instrument maker, Thomas Gaunt. The barometer has social significance as an example of the type of scientific equipment that Thomas Gaunt expanded his horology business into producing. Further social significance lies in the fact that Robert Ellery, the Government Astronomer who designed the local version of the barometer, had a direct connection with the Melbourne Athenaeum founded in 1839 as the Melbourne Mechanics' Institution. Its purpose was "the diffusion of literary, scientific and other useful information". There are also records of a T Gaunt as a subscription and committee member of this the Athenaeum organisation during the 1870s and 1880s which may be Thomas Gaunt, unfortunately still unverified.Stick mercury barometer known as the Admiral Fitzroy Barometer. It comprises an oblong wooden case with glass front panel, ornate pediment, barometer with bulb cistern (empty of fluid), cleaning brush with printed instructions for interpreting information given by the gauge affixed to left and right face of instrument. Includes a thermometer. The barometer appears to be intact. Adapted to the Southern Hemisphere. Special remarks by Admiral Fitzroy. Made by Thomas Gaunt, Melbourne. Manufacturer's details are on back of wooden casing. Rear has upper and lower brass screw plates for securing to vertical surface."Manufactured by Thomas Gaunt, 14 Little Bourke Street, Melbourne. "flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, barometer, admiral fitzroy, thomas gaunt, thomas gaunt of melbourne, clockmaker, admiral fitzroy barometer, barometer instructions, gaunt’s fitzroy barometer, gaunt’s of melbourne, gog and magog designer, horological manufacturer, meteorological instrument, melbourne athenaeum, melbourne mechanics' institution, melbourne observatory time signal, robert ellery government astronomer, scientific instrument, stick mercury barometer, thermometer, weather forecast, t gaunt & co

Chelsea Clock Company History: The Chelsea Clock Company is an American clock manufacturing company that started before 1880 with Joseph Henry Eastman who founded the Harvard Clock Company and produced 800 clocks of marine, carriage, shelf and banjo types. He went on to change the company name to the Boston Clock Company in 1884. After several name changes in 1897, the Chelsea Clock Company was finally founded. Clocks produced by Chelsea Clock Company have been found in the White House, on US Naval Ships, and in homes and offices around the world. After the company first began life as the Harvard Clock Company, it was named the Boston Clock Company, the Eastman Clock Company before finally becoming the Chelsea Clock Company in July of 1897. The company had developed many patents and innervations over these years and between 1939 and 1946 during World War II they were awarded contracts by the U.S Maritime Commission and produced vast numbers of clocks for both merchant and naval ships. U.S Maritime Commission History: The United States Maritime Commission (MARCOM) was an independent executive agency of the U.S. federal government that was created by the Merchant Marine Act of 1936, and replaced the United States Shipping Board which had existed since World War I. It was intended to formulate a merchant shipbuilding program to design and build five hundred modern merchant cargo ships to replace the World War I vintage vessels that comprised the bulk of the United States Merchant Marine, and to administer a subsidy system authorized by the Act to offset the cost differential between building in the U.S. and operating ships under the American flag. It also formed the United States Maritime Service for the training of seagoing ship's officers to man the new fleet. The purpose of the Maritime Commission was to formulate a merchant shipbuilding program to design and then have built over a ten-year period 900 modern fast merchant cargo ships which would replace the World War I-vintage vessels Those ships were intended to be then leased to U.S. shipping companies for their use in the foreign seagoing trades the aim was to offer better and more economical freight services. The ships were also intended to serve as a reserve naval auxiliary force in the event of armed conflict which was a duty the U.S. merchant fleet had often filled throughout the years since the Revolutionary War. From 1939 through the end of World War II, the Maritime Commission funded and administered the largest and most successful merchant shipbuilding effort in world history, producing ships for both navy and merchant marine. By the end of the war, U.S. shipyards working under Maritime Commission contracts had built a total of 5,777 ocean-going merchant and naval ships. In early 1942 both the training and licensing was transferred to the U.S. Coast Guard for administration, then later to the Maritime Service final responsibility was conveyed to the newly created War Shipping Administration which was created to oversee the operation of merchant ships being built by the Emergency Program to meet the needs of the U.S. Armed Services. With the end of World War II, both the Emergency and Long Range shipbuilding programs were terminated as there were far too many merchant vessels now for the Nation's peacetime needs. In 1946, the Merchant Ship Sales Act was passed to sell off a large portion of the ships built during the war to commercial buyers, both domestic and foreign. The U.S Maritime Commission was officially disbanded on May 24th 1950. These clocks were to be found on all ships made in American for the war effort between 1939 and 1946. They are a significant reminder of the sacrifice by those who served in the merchant marine and the navy’s during the Second World War. The item is a part of our social history that reminds us of these dark times. The loses of family members, along with the trauma that many sailors had endured and had to live with for the rest of their lives once they were released from service and allowed to go home.American Clock is an 8-day marine clock made by the Chelsea clock Co for the “US Maritime Commission” . There is a second smaller dial for the seconds and 24-hour markings. Also a fast-slow adjuster to the top of the dial. The clock is an 8 day marine clock with US Maritime Commission inscribed on face in black lettering. flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, clock, us maritime commission, chelsea clock company, horology, maratime clock

An Octant is a doubly reflecting navigation instrument used primarily by sailors to measure the angular distance between two visible objects and was a forerunner of the sextant. The name comes from the Latin octo, or “one-eighth of a circle,” for the Octant’s arc which spans 45°, or one-eighth of a circle. The primary use of an Octant is 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. The angle, and the time when it was measured, can be used to calculate a position line on a nautical chart (latitude), for example, sighting the Sun at noon or Polaris at night (in the Northern Hemisphere) gives an angle by which the latitude can then be estimated. Sighting the height of a landmark on land can also give a measure of distance. History: The principle of the Octant as an instrument to measure ones latitude was first implemented around 1742-present but was superseded by the improvement of the octant to a sextant, a very similar instrument, better made and able to measure bigger angles 120°, allowing the measurement of Luna distances to give longitude when used with an accurate chronometer. The sextant started to appear around 1730 and 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. Henry Hemsley was a lesser-known instrument maker and optician working in London in the late 17th and early 18th century. However, it should be noted that there were two Henry Hemsley opticians and instrument makers around this period. (Henry Hemsley 1, 1786-89, who had premises at 85 Fleet St London and Henry Hemsley 2, 1828-56), whose workshop was at 135-138 Radcliff Highway London. Therefore, based on the inscribed workshop address Henry Hemsley 2 is responsible for making this example.The octant is representative of its type and although not fully complete it demonstrates how 18th and 19th-century mariners determined their latitude on a chart to navigate their way across the world's oceans in the 18th and 19th century. It also demonstrates the skill and workmanship of the early instrument makers that operated from London at this time and provided most of the navigational instrumentation use by commercial and military navies of the time.Octant, ebony wooden frame and handle. Scale is missing from recess in frame. "H. Hemsley 135-138 Ratliff Highway, London", no box"H. Hemsley 135-138 Ratcliff Highway, London"flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, navigation, navigational instrument, instrument used for navigation, sextant, henry hemsley, instrument maker, london, octant

This Chart titled “Lady Bay and Warrnambool Harbour” was surveyed by Nav. Lieut. H.J. Stanley, of Britain's Royal Navy, in 1870 and printed in April 1871. The chart was made before the Warrnambool Breakwater was built (construction had begun in 1874 and was completed in 1890). The chart includes Directions for entering Lady Bay, Warrnambool Harbour. These are "Vessels entering Warrnambool Harbour must bring the Red Light in sight and steer in with it in line with the upper white Light bearing North, until the Green Light on the Jetty is opened, when steer towards it and anchor. The best anchorage is in 2 ¼ fms [fathoms)] of water, about a cable from ledge off Breakwater rock. Or where convenient, according to draught of water, only endeavouring to anchor as close as possible to Breakwater rock. It is not safe to enter or leave the Harbour in south westerly or Southerly gales.” This chart is significant for its strong connection to the maritime history of Warrnambool Harbour and Lady Bay, and eventually to the Warrnambool Breakwater. The Warrnambool Breakwater is registered as a place of significance on the Victorian Heritage Database (VHR H2024). A copy of the same chart was used to plan several submissions for future changes to the jetty and breakwater. The chart is a historical record of structures existing in 1870; the Warrnambool Jetties, Lady Bay, the leading lights (lighthouses), streets, roads, bridges and many buildings. It also shows the lay of the land and seabed.Canvas chart of Australia, South Coast, Victoria Title: Lady Bay and Warrnambool Harbour Surveyed by Nav. Lieut. H.J. Stanley, R.N., 1870. Magnet Variation, 1870 Published April 3, 1871, by the Admiralty, London. Directions for vessels entering Warrnambool Harbour are printed on the chart. The chart has a lacquer or seal over it.Top of chart has logo "HYDROGRAPHER OFFICE" "Price Eighteen Pence". "Engraved by Edward Weller" Along bottom of Chart: “London… Published at the Admiralty, 3rd April 1871, under the Superintendence of Rear Admiral G.H. Richards, F.R.S. Hydrographer, Corrections July 71” Bottom of chart “Australia South Coast Victoria Lady Bay and Warrnambool Harbour. 2494”flagstaff hill, warrnambool, chart of lady bay warrnambool 1870, warrnambool harbour, cartography, navigation, warrnambool breakwater, 1871, australia – south coast / victoria, lady bay, 1870, nav. lieut. h.j. stanley, r.n, directions for entering warrnambool harbour, hydrographer office, rear admiral g.h. richards, edward weller, port of warrnambool, flagstaff hill maritime museum & village, maritime museum, maritime village, shipwreck coast, map, chart, navigation chart, admiralty chart, breakwater, jetty, pier, vhr h2024

Thomas Walker & Son was internationally renowned in the manufacturing of ships logs. Founding father Thomas Walker (1805–1871), an engineer in Birmingham, patented a mechanical log in 1878 which was a recording instrument that attached to a rail at the stern of a vessel connected by a long cord with a rotor which was towed behind the ship. The instrument dial recorded the distance travelled. Thomas Walker first went into business to manufacture stoves at 58 Oxford Street Birmingham. Walker’s self-feeding stove was widely lauded at the Paris Exhibition of 1855, winning a prize medal and kick starting the first of many notable innovations for the Walker family's manufacturing business. However, it wasn’t until working on an earlier ships log model invented by his Uncle that Thomas Walker became interested in the further development of this device, used to ascertain a ship’s speed. Walker continued to improve on the common log for the company of Massey & Sons and these improvements were deemed revolutionary. This log became a firm favourite of the West India Association (British-based organisation promoting ties and trade with the British Caribbean) and the most common log in use for two generations. It took till 1861 for Thomas Walker and his son, Thomas Ferdinand Walker (1831-1921) to patent the first Walker log of many. Together, with the introduction of the A1 Harpoon Log two years later, they established the Walker Log Business as a force to be reckoned with. By the time of his passing in 1871, Thomas Walker Snr had not only founded a family business with considerable staying power but also instilled a tradition of public service. Having sat as a representative on the Birmingham Town Council for 15 years and played an active role in public works, he was soon given the nickname of ‘Blue Brick Walker’. Much like his father, Thomas Ferdinand Walker changed the face of the maritime industry. His patent of 1897, the ‘Cherub’ log, was a notable departure from the past providing a far more accurate reading and replacing the majority of logs of the age. They were the first to produce an electric log and the Walker factory was one of the first to introduce the 48 hour work week for employees. This ship log was invented and made by a significant marine instrument maker and innovator of machinery. It demonstrates the huge leap taken to improve navigational accuracy at sea with an instrument that was in use for decades. Ship Log, three analogue dials calibrated in increments of Miles, the Rocket Log is a nautical instrument for measuring a vessel’s speed and distance traveled. The floating log was drawn behind the ship over a fixed time period in order to measure the distance traveled. The counter could measure enough miles to cover the maximum distance traveled by a ship in one day. The log has two distinct parts; a brass register, made by Walker, showing the distance recorded and the rotator made by Reynolds, that spins in the water driving the counter. both parts are connected by a linked chain. The register has a cylindrical brass body approx 4.5 cm diameter containing registering mechanism with hardened steel bearings. Distance is indicated by the three pointers on enamel plate as follows: graduated every 10 miles from 0-100; every mile from 1-10; every 1/4 mile from 1/4 -1. A brass sling and eye secured to the body enables it to be attached to the taffrail. The original rotator would have had a cylindrical tapered wooden body, approx 4.5 cm in diameter with three metal alloy fins or could be all made from brass. A towing eye is fitted to the tapered end. The two pieces of apparatus are connected by a length of linked chain, length 22.9 cm."Walkers Rocket Ship-Log Birmingham (Patented)" printed on face-plate. "Made by Thomas Walker".flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, ship log, rocket log, mechanical ship log, measuring instrument, marine instrument, nautical instrument, speed recording instrument, ship log register, walker ship log, walkers rocket ship-log, thomas walker, thomas walker & son, thomas ferdinand walker, walker log business, reynolds ship log rotor, taffrail log, taff rail log, west india association

Log Rotor or spinner of a taffrail Ship Log (261 in texta on back) with eyelet, joined on by spliced and whipped rope.flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, log rotor, taffrail log

Isaac Sherwoods Ltd were manufacturers of oil lamps and burners in Birmingham, in 1904 they were trading as Isaac Sherwood & Son Ltd. but by 1920 they had taken over Linley & Co. of 73-75 Great Lister Street, makers of `American' pattern lamps to become Sherwood-Linley at Nechells Park Works, Eliot Street. The company were a leading manufacturer of oil and candle lamps exporting their goods all over the world. The subject lamp is operated with a candle, which is inserted on the underside, it is sprung and as the candle burns the spring keeps the candle pushed upwards keeping the flame burning until the candle is extinct. Sherwoods invented and patented this innovation for candle lamps.The subject item is incomplete however it has some significance as it was designed to be used in a sea going vessel, as a result is quite rare also the item is made by a well known manufacturer.Spring loaded candle Lamp, brass, with gimbal wall attachment for use on a ship, shade and mount missing. Candle-stop has the words "Sherwoods Limited, trademark sound".flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, candle lamp, gimbal spring, sherwoods limited

The Excelsior IV Log is a nautical instrument for measuring a vessel’s speed and distance travelled. When navigating a ship it is essential to be able to estimate the boat’s speed and distance travelled to determine its position at sea. In times past the only way to measure a ship’s speed was to throw a wood log into the water and observe how fast it moved away from the ship. In the 16th century, the log was fastened to a rope knotted at set intervals. The log was thrown over the stern (back) of the vessel and a crew member counted the number of knots that were paid out in a set time. From this, they could estimate the speed of the vessel through the water. This was known as streaming the log and is also the derivation of the knot as a measurement of nautical speed. The Walker’s Excelsior Mark IV instrument was designed for smaller vessels, such as yachts, launches and fishing vessels. Historical: Thomas Walker & Son was internationally renowned in the manufacturing of ships logs, founding father , Thomas Walker (1805–1871), an engineer in Birmingham, patented a mechanical log in 1878 which was a recording instrument that attached to a rail at the stern of a vessel connected by a long cord with a rotor which was towed behind the ship. The instrument dial recorded the distance travelled. Thomas Walker first went into business to manufacture stoves at 58 Oxford Street Birmingham. Walker’s self-feeding stove was widely lauded at the Paris Exhibition of 1855, winning a prize medal and kick starting the first of many notable innovations for the Walker family's manufacturing business. However, it wasn’t until working on an earlier ship’s log model invented by his Uncle that Thomas Walker became interested in the further development of this device, used to ascertain a ship’s speed. Walker continued to improve on the common log for the company of Massey & Sons and these improvements were deemed revolutionary. This log became a firm favourite of the West India Association (British-based organisation promoting ties and trade with the British Caribbean), being the most common log in use for two generations. It took until 1861 for Thomas Walker and his son, Thomas Ferdinand Walker (1831-1921) to patent the first Walker log of many. Together, with the introduction of the A1 Harpoon Log two years later, they established the Walker Log Business as a force to be reckoned with. By the time of his passing in 1871, Thomas Walker Snr had not only founded a family business with considerable staying power but also instilled a tradition of public service. Having sat as a representative on the Birmingham Town Council for 15 years and played an active role in public works, he was soon given the nickname of ‘Blue Brick Walker’. Much like his father, Thomas Ferdinand Walker changed the face of the maritime industry. His patent of 1897, the ‘Cherub’ log, was a notable departure from the past providing a far more accurate reading and replacing the majority of logs of the age. They were the first to produce an electric log and the Walker factory was one of the first to introduce the 48 hour work week for employees. The ship log was invented and made by a significant marine instrument maker and innovator of machinery. It demonstrates the huge leap taken to improve navigational accuracy at sea with an instrument that was in use for decades.Ship's Taff Rail Log, rope attached. Walker's Excelsior IV Log model. Nautical miles dials: units and 10's. "Walker's Excelsior IV Log", "Made in England by Thomas Walker, Birmingham"flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, log register, taff rail log, taffrail log, marine navigation, a1 harpoon log, cherub’ log, walker’s excelsior mark iv log, ship’s log instrument, mechanical ship’s log, measure ship’s speed, nautical instrument, navigation instrument, massey & sons, thomas walker, blue brick walker, thomas walker & son, thomas ferdinand walker, 48 hour work week

The flywheel possibly belongs to a Walker's Cherub Mark III Ship-log taffrail, how the flywheel operates is a metal loop of the recording log would have been connected to the flywheel, so you could see if it was spinning properly. After the flywheel, is the rotor that was towed behind the ship and the revolutions of the rotor would register on the indicator, thus measuring the distance the vessel had travelled. Thomas Ferdinand Walker (1837–1921) first patented the Cherub log in 1878. It was one of the first logs in which the recorder was placed onboard a ship rather than being incorporated as part of the rotor. The Cherub Mark III series was produced from 1930 it came in two versions a thousand-mile which is quite rare and a five hundred-mile version.This ship log flywheel was invented and made by a significant marine instrument maker and innovator of machinery Thomas Walker. It demonstrates the huge leap taken to improve navigational accuracy at sea with an instrument that was in use for decades to measure the distance travelled at sea updated versions are in use today by mariners.Log Governor (or Fly-wheel) from a Ships Taffrail Log, metal wheel with 6 spokes, hub has rope attached for connecting to ships log. Boss the other side for attachment to the spinner.Noneflagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, log governor

Watch faces glass 10c and 20c sizes.flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, watch faces glass

Watch faces glass numerous for watches 1 1/2 diam flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village

Watch faces glass numerous for watches 1 1/2 diam flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, watch faces glass

Thomas Walker & Son was internationally renowned in the manufacturing of ships logs, founding father, Thomas Walker (1805–1871), an engineer in Birmingham, patented a mechanical log in 1878 which was a recording instrument that attached to a rail at the stern of a vessel connected by a long cord with a rotor which was towed behind the ship. The instrument dial recorded the distance travelled. Thomas Walker first went into business to manufacture stoves at 58 Oxford Street Birmingham. Walker’s self-feeding stove was widely lauded at the Paris Exhibition of 1855, winning a prize medal and kick starting the first of many notable innovations for the Walker family's manufacturing business. However, it wasn’t until working on an earlier ships log model invented by his Uncle that Thomas Walker became interested in the further development of this device, used to ascertain a ship’s speed. Walker continued to improve on the common log for the company of Massey & Sons and these improvements were deemed revolutionary. This log became a firm favourite of the West India Association (British-based organisation promoting ties and trade with the British Caribbean). and the most common log in use for two generations. It took till 1861 for Thomas Walker and his son, Thomas Ferdinand Walker (1831-1921) to patent the first Walker log of many. Together, with the introduction of the A1 Harpoon Log two years later, they established the Walker Log Business as a force to be reckoned with. By the time of his passing in 1871, Thomas Walker Snr had not only founded a family business with considerable staying power but also instilled a tradition of public service. Having sat as a representative on the Birmingham Town Council for 15 years and played an active role in public works, he was soon given the nickname of ‘Blue Brick Walker’. Much like his father, Thomas Ferdinand Walker changed the face of the maritime industry. His patent of 1897, the ‘Cherub’ log, was a notable departure from the past providing a far more accurate reading and replacing the majority of logs of the age. They were the first to produce an electric log and the Walker factory was one of the first to introduce the 48 hour work week for employees. This ship log rotor was invented and made by a significant marine instrument maker and innovator of machinery. It demonstrates the huge leap taken to improve navigational accuracy at sea with an instrument that was in use for decades and still is today. Therefore it is a worthy addition to the Flagstaff Maritime collection as it demonstrates another aspect of maritime navigation.A Walkers Cherub III Patent mechanical ship brass rotor with with four vane's one marked with an anchor and "T. W. Cherub 441", The log is attached to a brass swivel with a short length of rope. Has T W Cherub 441 marked on a vane.flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, log rotor, taffrail log, thomas walker, marine technology, marine instrument, navigation, ship speed, measurment

Log Governor (or Fly-wheel) from a Ship Log; metal wheel shape with 6 spokes, hub has rope attached for connecting to ships log. Metal hook detached from rope.flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, log governor (or fly-wheel), log governor, fly-wheel

Brass Band Instrument - Cornet. On horn Class A Proteano. "Medals of Honour". Beeson & Co "Prototype" 198 Euston Road London England. Importer A. P. Sykes Melbourne. Model Beesons Brevete 116028 Length 12½" Bell 4⅝" Mouthpiece missing. Has flower design on horn. flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, brass instrument, beeson & co, a. p. sykes, beesons brevete 116028, beesons brevete, cornet.