Showing 19 items
matching precision measures
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City of Moorabbin Historical Society (Operating the Box Cottage Museum)
Scales, Gold, Apothecary, Analytical in Glass Case c1880, c1880
... precision measures... buyers rtc. scales balance precision measures gold pharmacy ...A pair of scales or dishes in which objects to be weighed and the weights / masses against which to weigh them are placed is an "Apparatus for weighing. The pan, or each of the pans, of a balance." Its parts include a fulcrum, a beam that balances on it, two pans at the ends of the beam to hold the materials to be weighed, and counter-balancing weights. Gottingen made fine precision scientific scales for use by assayers, jewellers, chemists, gold buyers rtc. A 2 pan analytical, scientific or pharmaceutical beam balance scale made in Gottingen Germany c 1880. These scales are encased in a mahogany framed glass cabinet and Graded 0 -9 9-0D.R.PATENT / GOTTINGER PRAZISIONSWAGENFABRIK G.m.b.H. / GOTTINGEN On upright V over GPW scales, balance, precision measures, gold, pharmacy, precious metals, jewellery, gottingen germany, sartorious f, moorabin, bentleigh, cheltenham, early settlers, gold miners, pioneers, market gardeners, ballarat, bendigo, imperial measure, troy weight -
Orbost & District Historical Society
theodolite, first half 20th century
... is a precision instrument for measuring angles in the horizontal... is a precision instrument for measuring angles in the horizontal ...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 -
Flagstaff Hill Maritime Museum and Village
Theodolite, Troughton & Simms, Mid 19th Century
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 -
Nhill Aviation Heritage Centre
Instrument - Barometer, Aneroid Barometer, c1960s
Precision instrument used meteorological offices on air fields to measure barometric pressure141.1 Metal cube shape instrument with button switch attached is a cylindrical read out and adjuster knob. 141.2 Carry box with hinged lid and metal latch, has three hold down screws. 141.3 Stainless steel and glass thermometer 141.4 batteries 4x 15v. Standard batteries were HT Eveready B123 30v x3, LT Eveready LLII 1.5 v x1Aneroid Barometer, Type No. M.1991/A Range 800-1050mb. Ser No. 686/65, Mechanism Ltd, Made in Englandbarometer, instrument, aneroid barometer, thermometer -
City of Moorabbin Historical Society (Operating the Box Cottage Museum)
Scales, Imperial, Spring, 'Salter Household Scale’ 28lb, c1920
In the 18th century, spring scales appeared. To produce these scales, a manufacturer would use the resistance of a spring to calculate weights, which could be read automatically on the scale’s face. The ease of use of spring scales over balance scales is what led most post offices to outfit their clerks with spring postal scales. One of the most common types of spring scales was the kitchen scale—also known as a family or dial scale. Designed for horizontal surfaces, these scales used the weight of goods in a pan at the top of the scale to force the spring down. Such scales were common in early-20th-century households and were sold by Sears and Montgomery Ward. Many had flat weighing surfaces but some were topped by shallow pans. Companies such as Salters, Chatillon, and Fairbanks made both. SALTER HOUSEWARES began in the late 1760 in the village of Bilston, England. At this time Richard Salter, a spring maker, began making 'pocket steelyards', a scale similar to the fisherman's scale of today. By 1825 his nephew George had taken over the company, which became known as George Salter & Co. and later established a large, well equipped manufacturing site in the town of West Bromwich. The business thrived throughout the 1900s, and in 1972 the company was purchased by Staveley Industries Plc. In 2002, the management team at Salter Housewares Ltd, backed by Barclays Private Equity, bought the company out from the group, to concentrate on its consumer businesses. In 2004 was sold to the US-based HoMedics company, and in 2006, Salter Housewares USA and Taylor Precision Products Inc (also owned by HoMedics) merged.Salter Brand No. 46 Household Spring Balance Kitchen Scales made of green painted metal with a white large clock face dial marked in 1oz graduations and with a shallow metal bowl placed on the flat top connected to the mechanism. An adjustable screw tightened or loosened the spring to bring the pointer to zero, prior to adding the material to be weighed.. A common piece of kitchen equipment as most families used this type of scale when measuring goods for cooking or storing. HOUSEHOLD SCALE / NO. 46 / SALTER / TO WEIGH 28 LB / ( rope & arrow TM) BRITISH MADE Base rope & anchor S (trade mark) weights, measures, shops, scales. balances, grocery stores, early settlers, moorabbin, bentleigh, cheltenham, salter housewares pty ltd, west bromwich, england, salter george, salter richard, bilston england -
City of Moorabbin Historical Society (Operating the Box Cottage Museum)
Scales,Spring Balnce Imperial ‘Household’ Salter, 20thC
In the 18th century, spring scales appeared. To produce these scales, a manufacturer would use the resistance of a spring to calculate weights, which could be read automatically on the scale’s face. The ease of use of spring scales over balance scales is what led most post offices to outfit their clerks with spring postal scales. One of the most common types of spring scales was the kitchen scale—also known as a family or dial scale. Designed for horizontal surfaces, these scales used the weight of goods in a pan at the top of the scale to force the spring down. Such scales were common in early-20th-century households and were sold by Sears and Montgomery Ward. Many had flat weighing surfaces but some were topped by shallow pans. Companies such as Salters, Chatillon, and Fairbanks made both. SALTER HOUSEWARES began in the late 1760 in the village of Bilston, England. At this time Richard Salter, a spring maker, began making 'pocket steelyards', a scale similar to the fisherman's scale of today. By 1825 his nephew George had taken over the company, which became known as George Salter & Co. and later established a large, well equipped manufacturing site in the town of West Bromwich. The business thrived throughout the 1900s, and in 1972 the company was purchased by Staveley Industries Plc. In 2002, the management team at Salter Housewares Ltd, backed by Barclays Private Equity, bought the company out from the group, to concentrate on its consumer businesses. In 2004 was sold to the US-based HoMedics company, and in 2006, Salter Housewares USA and Taylor Precision Products Inc (also owned by HoMedics) merged. Salter Brand No. 44 Household Spring Balance Kitchen Scales made of green painted metal with a large clock face dial marked in 1oz graduations and with a shallow metal bowl placed on the flat top connected to the mechanism. An adjustable screw tightened or loosened the spring to bring the pointer to zero, prior to adding the material to be weighed.. A common piece of kitchen equipment as most families used this type of scale when measuring goods for cooking or storing.On Clock face ; NO. 44 / HOUSEHOLD SCALE / TO WEIGH 14LB X 1OZ / Pro. Pat. No. 30819 / 32 / MADE IN ENGLAND / SALTER / S in trademark rope with arrow market gardeners, early settlers, fruit, vegetables, farmers, cooking, recipes, scales, weights, measures, brass, balance beam, moorabbin, cheltenham, bentleigh, kitchen scales, dairy products, cereals, wheat flour, salter housewares pty ltd, west bromwich england -
Flagstaff Hill Maritime Museum and Village
Equipment - Spring Balance Scale, George Salter & Co, 1920s
Scales such as the subject item were used to measure commercial quantities, possibly grains and farm produce for quite large amounts of product. Bags of grain etc would have been hooked up and weighed. Salter has been a name long associated with weights and measures. The firm began life in the late 1760s in the village of Bilston, England when Richard Salter, a spring maker, began making the first spring scales in Britain. He called these scales "pocket steelyards", though they work on a different principle from steelyard balances. By 1825 his nephew George had taken over the company, which became known as George Salter & Co. George later established a manufacturing site in the town of West Bromwich, about 4 miles (7 km) from Bilston. West Bromwich Albion football club was formed from workers at this works site. From here the company produced a wide variety of scales including the UK's first bathroom scales. Other items were added to the range, including irons, mincers, potato chippers, coin-operated machines and the first typewriters made in the UK. The business thrived throughout the 1900s, and by 1950 it employed over 2000 people, still in the same area and owned by the same family.Salter is a British housewares brand developing products that span a wide range of core product categories, including scales, electrical, cookware. It is a market leader in kitchen and bathroom scales and one of the UK’s oldest consumer brands. Established in 1760, Salter has been developing precision products for over 260 years. It was acquired by Manchester-based consumer goods giant Ultimate Products in 2021 after they had previously licensed the brand for cookware and kitchen electrical since 2011.Balance scale Salters Spring Balance consisting of a circular, bronze face engraved with measurements in pounds, with an iron hand, weighing mechanism and hanging loop. Engraved on the face: "Class III Salter's Spring Balance Silvester's Patent To Weigh 300lbs".flagstaff hill, warrnambool, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, salter balance scale, weight measuring scale, weighing dry goods -
Flagstaff Hill Maritime Museum and Village
Equipment - Stevenson Screen, Thomas Stevenson, ca. 1910
Stevenson screens were first introduced in Australia in the 1880s and were widely installed by 1910. The screens have been used to shelter and protect thermometers and other meteorological instruments from rain and direct heat while the holes and double-louvre walls allowed air to flow around them. Sometimes other meteorological instruments were included in the weather stations, so there were different Stevenson Screen sizes. This authentic, original Stevenson screen was previously owned by the Australian Bureau of Meteorology and was used for many years for weather readings at the Cape Otway Light Station in southwest Victoria. The Lighthouse Keepers recorded the readings for minimum and maximum temperatures at 9 a.m. every day from January 1865 until April 1994. The equipment was sheltered in a Stevenson Screen from 1902 until April 15 1994, when the mercury thermometer was replaced by a platinum resistance probe within an Automatic Weather Station (AWS). This Stevenson screen is one of the two screens that then became redundant. The other Stevenson screen was kept to display to visitors. Lightkeepers were no longer required at the Cape Otway Light station either, due to the automated system. The meteorological instruments donated with the screen were used for measuring temperature and humidity. They are mounted on a metal bracket that fits across the screw holes on the screen’s internal frame. The glass-covered Relative Humidity (RH) sensor was made by the renowned precision instrument maker, Rotronic AG of Switzerland, which was founded in 1965. The firm made its first electronic temperature and humidity instrument in 1967. Meteorological records have been collected in Australia from the 1800s. The records were collated, published and used as a basis for weather forecasts. Many sectors, such as maritime and agriculture industries, have relied on these figures for making important decisions. The quality and placement of the meteorological instruments used to measure temperature and humidity are of utmost importance for accuracy. In early colonial times, there were no national standards for meteorological instruments that would allow for accurate figures and comparisons. Once the Bureau of Meteorology was established (around 1908 to 1910) the department installed Stevenson screens throughout Australia, many at lighthouses and light stations, and the measuring instruments were standardised. The Stevenson Screen was named after its inventor, Scottish Civil Engineer Thomas Stevenson (1818-1887) who was also the father of Robert Louis Stevenson, author. Stevenson developed the small thermometer screen around 1867. It had double-louvred walls around the sides and a top of two asbestos sheets with an air space between them and was thickly painted with a white coating that reflected the sun’s rays. This design was modified in 1884 by Edward Mawley of the Royal Meteorological Society. Standards were set for the locations of the screens and instruments, including their distance above ground level and the direction the door faced.Stevenson screens played a significant part in providing a standardised shelter for all meteorological instruments used by the Australian Bureau of Meteorology from about 1910 until 1994. The readings from the instruments gave the meteorological statistics on which weather forecasts throughout Australia were based. This Stevenson screen was used locally at Cape Otway, along the Great Ocean Road in southwest Victoria, so contributed towards our local forecasts and weather warnings.Stevenson screen, original, from the Australian Bureau of Meteorology’s weather station at the Cape Otway Lighthouse. The screen is a white wooden cupboard with a slanted cover raised above the top. The top has ten drilled ventilation holes, and the sides and door are made of downward-slanting double louvres. Two brass hinges join the door to the lower edge of the screen and a metal fitting at the top edge allows for a padlock closure. The screen is supported on four short legs, each with a hole drilled from side to side for fitting to a frame. Inside the screen are two wooden frames fitted with hooks and screws. The floor has three boards; one across the back and one across the front at the same level, and a board wider than the space between these boards is fitted higher, overlapping them slightly. Inside the screen, a pair of electronic instruments with short electric cables is mounted on a metal bracket with drilled holes in it. One of the instruments is a Relative Humidity (RH) probe. It is 26 cm long and is a glass tube with a filter on one end and an electrical connection on the other. It has inscriptions on its label, showing that was made by Rotronic AG, Switzerland. The other instrument is a Resistance Temperature Device (RTD) thermometer. It is 22.5 cm long and has a narrow metal probe joined to a hexagonal metal fitting. A brass plate on the front of the screen has impressed inscriptions. The screen is Serial Number 01/C0032, Catalogue Number 235862.Stamped into brass plate "CAT. NO. / 253862 / SERIAL NO. 01/C0032" On instrument’s electrical fitting; “CD2” [within oval ‘+’ above S] “Serie693 op65 / 220/380V~16A” On instrument’s glass; “rotronic ag” “SWISS MADE” “CE / CH-8303 / Bassersdorf” Symbol for [BARCODE] “ART NO MP 101A_T4-W4W” “POWER 4.8.30VDC“ “OP. RANGE: 0-100%RH/-40+60° C” “OUT H 0-100% 0-1V” “OUT T -40+60°C -0.4..+0.6V” “SERIE NO 19522 009”flagstaff hill maritime museum and village, warrnambool, maritime museum, maritime village, great ocean road, shipwreck coast, cotton region shelter, instrument shelter, thermometer shelter, thermoscreen, thermometer screen, measuring instruments, meteorological instrument, weather recording, weather station, lighthouse equipment, light station equipment, stevenson screen, marine instruments, mercury thermometer, platinum resistance probe, aws, automatic weather station, rotronic ag, swiss made, meteorological device, weather forecast, weather prediction, weather records, meteorological forecast, meteorological record, australian bureau of meteorology, bureau of meteorology, bureau, bom, relative humidity, rh, relative humidity probe, resistance temperature device, rtd, thermometer, temperature, humidity, cape otway, cape otway lighthouse, cape otway light station, rotronic, switzerland, swiss instrument, thomas stevenson, double-louvered walls, edward mawley, royal meteorological society, 01/c0032, serial number, cat. no. 235862, serial no. 01/c00323 -
Federation University Historical Collection
Ammeter, Henry Sutton (probably), Ammeter attributed to Henry Sutton, 1883 (estimated)
W.B Withers wrote of Sutton: "In the realm of science Ballarat has become of world-wide fame through the inventions by Mr Henry Sutton, a native of the place. His skill and acquirements in electricity, telegraphy, telephony, photography and also in astronomical and microscopal studies have won for him a high position as a practical scientist, and the credit is the greater as he is a self-taught student … Mr Sutton, before he was fourteen years old, had read every book on science to be found in the library of the Ballarat Mechanics' Institute." The Ballarat School of Mines (SMB) was fortunate to have this genius appointed as the lecturer-in-charge of the new Electricity and Magnetism department from 23 April 1883. Although Henry Sutton submitted his resignation to the Council of SMB in October 1884 it was resolved that he be asked to reconsider, and Mr Sutton continued to teach at SMB until the end of 1886. He was a prominent member of the Camera Club, and many of the other SMB clubs. Sutton had an active and fertile brain, and was known for his inventions, especially his work on the telephone, telephane and carbon lamps. Sutton presented a vacuum pump, worked by water jet, for use in SMB Chemistry classes. His report of 1883 states: ‘A telephonic circuit has been laid down between the [SMB] engine-house and workshops, to be used for experimental purposes.’ Henry Sutton spent much thought on artificial flight, and made some interesting experimental studies with flying birds. The storage of electricty also attracted his attention, and, after much work and thought evolved the Sutton Secondary Battery. A paper on this battery was presented to the Royal Society, London, and was afterwards printed in the 'Transactions'. Henry Sutton is listed on the Federation University Honour Roll at https://www.federation.edu.au/curator/honour-roll/honourroll_sutton.shtmlA crude scientific instrument that measures amps, with a timber base and frame. Terminal posts and sliders contacts are positioned on top of the base, with flex attached. Henry Sutton lectured at the Ballarat School of Mines (SMB) in Electricty and Magnestism between 1883 and 1886. In 1883 Sutton reported: ‘…The class has been unfortunately situated, by having to wait for instruments of precision ordered from England, but which have not come to hand. The delay has caused us to start constructing instruments, which it is hoped will bear favourable comparison with those of older date.'ammeter, henry sutton, electrical, inventor, electricity and magnetism, sutton, scientific instruments -
Flagstaff Hill Maritime Museum and Village
Functional object - Glass Measuring Tube
A graduated cylinder, also known as a measuring cylinder or mixing cylinder, is a common piece of laboratory equipment used to measure the volume of a liquid. It has a narrow cylindrical shape. Each marked line on the graduated cylinder represents the amount of liquid that has been measured. A traditional graduated cylinder is usually narrow and tall so as to increase the accuracy and precision of volume measurement. It has a plastic or glass base (stand, foot, support) and a "spout" for easy pouring of the measured liquid. https://en.wikipedia.org/wiki/Graduated_cylinder The glass measuring tube was donated to Flagstaff Hill Maritime Village by the family of Doctor William Roy Angus, Surgeon and Oculist. It is part of the “W.R. Angus Collection” includes historical medical equipment, surgical instruments and material once belonging to Dr Edward Ryan and Dr Thomas Francis Ryan, (both of Nhill, Victoria) as well as Dr Angus’ own belongings. The Collection’s history spans the medical practices of the two Doctors Ryan, from 1885-1926 plus that of Dr Angus, up until 1969. ABOUT THE “W.R.ANGUS COLLECTION” Doctor William Roy Angus M.B., B.S., Adel., 1923, F.R.C.S. Edin.,1928 (also known as Dr Roy Angus) was born in Murrumbeena, Victoria in 1901 and lived until 1970. He qualified as a doctor in 1923 at University of Adelaide, was Resident Medical Officer at the Royal Adelaide Hospital in 1924 and for a period was house surgeon to Sir (then Mr.) Henry Simpson Newland. Dr Angus was briefly an Assistant to Dr Riddell of Kapunda, then commenced private practice at Curramulka, Yorke Peninsula, SA, where he was physician, surgeon and chemist. In 1926, he was appointed as new Medical Assistant to Dr Thomas Francis Ryan (T.F. Ryan, or Tom), in Nhill, Victoria, where his experiences included radiology and pharmacy. In 1927 he was Acting House Surgeon in Dr Tom Ryan’s absence. Dr Angus had become engaged to Gladys Forsyth and they decided he further his studies overseas in the UK in 1927. He studied at London University College Hospital and at Edinburgh Royal Infirmary and in 1928, was awarded FRCS (Fellow from the Royal College of Surgeons), Edinburgh. He worked his passage back to Australia as a Ship’s Surgeon on the on the Australian Commonwealth Line’s T.S.S. Largs Bay. Dr Angus married Gladys in 1929, in Ballarat. (They went on to have one son (Graham 1932, born in SA) and two daughters (Helen (died 12/07/1996) and Berenice (Berry), both born at Mira, Nhill ) According to Berry, her mother Gladys made a lot of their clothes. She was very talented and did some lovely embroidery including lingerie for her trousseau and beautifully handmade baby clothes. Dr Angus was a ‘flying doctor’ for the A.I.M. (Australian Inland Ministry) Aerial Medical Service in 1928 . Its first station was in the remote town of Oodnadatta, where Dr Angus was stationed. He was locum tenens there on North-South Railway at 21 Mile Camp. He took up this ‘flying doctor’ position in response to a call from Dr John Flynn; the organisation was later known as the Flying Doctor Service, then the Royal Flying Doctor Service. A lot of his work during this time involved dental surgery also. Between 1928-1932 he was surgeon at the Curramulka Hospital, Yorke Peninsula, South Australia. In 1933 Dr Angus returned to Nhill and purchased a share of the Nelson Street practice and Mira hospital (a 2 bed ward at the Nelson Street Practice) from Dr Les Middleton one of the Middleton Brothers, the current owners of what previously once Dr Tom Ryan’s practice. Dr Tom and his brother had worked as surgeons included eye surgery. Dr Tom Ryan performed many of his operations in the Mira private hospital on his premises. He had been House Surgeon at the Nhill Hospital 1902-1926. Dr Tom Ryan had one of the only two pieces of radiology equipment in Victoria during his practicing years – The Royal Melbourne Hospital had the other one. Over the years Dr Tom Ryan had gradually set up what was effectively a training school for country general-practitioner-surgeons. Each patient was carefully examined, including using the X-ray machine, and any surgery was discussed and planned with Dr Ryan’s assistants several days in advance. Dr Angus gained experience in using the X-ray machine there during his time as assistant to Dr Ryan. When Dr Angus bought into the Nelson Street premises in Nhill he was also appointed as the Nhill Hospital’s Honorary House Surgeon 1933-1938. His practitioner’s plate from his Nhill surgery is now mounted on the doorway to the Port Medical Office at Flagstaff Hill Maritime Village, Warrnambool. When Dr Angus took up practice in the Dr Edward and Dr Tom Ryan’s old premises he obtained their extensive collection of historical medical equipment and materials spanning 1884-1926. A large part of this collection is now on display at the Port Medical Office at Flagstaff Hill Maritime Village in Warrnambool. In 1939 Dr Angus and his family moved to Warrnambool where he purchased “Birchwood,” the 1852 home and medical practice of Dr John Hunter Henderson, at 214 Koroit Street. (This property was sold in1965 to the State Government and is now the site of the Warrnambool Police Station. and an ALDI sore is on the land that was once their tennis court). The Angus family was able to afford gardeners, cooks and maids; their home was a popular place for visiting dignitaries to stay whilst visiting Warrnambool. Dr Angus had his own silk worm farm at home in a Mulberry tree. His young daughter used his centrifuge for spinning the silk. Dr Angus was appointed on a part-time basis as Port Medical Officer (Health Officer) in Warrnambool and held this position until the 1940’s when the government no longer required the service of a Port Medical Officer in Warrnambool; he was thus Warrnambool’s last serving Port Medical Officer. (Masters of immigrant ships arriving in port reported incidents of diseases, illness and death and the Port Medical Officer made a decision on whether the ship required Quarantine and for how long, in this way preventing contagious illness from spreading from new immigrants to the residents already in the colony.) Dr Angus was a member of the Australian Medical Association, for 35 years and surgeon at the Warrnambool Base Hospital 1939-1942, He served with the Australian Department of Defence as a Surgeon Captain during WWII 1942-45, in Ballarat, Victoria, and in Bonegilla, N.S.W., completing his service just before the end of the war due to suffering from a heart attack. During his convalescence he carved an intricate and ‘most artistic’ chess set from the material that dentures were made from. He then studied ophthalmology at the Royal Melbourne Eye and Ear Hospital and created cosmetically superior artificial eyes by pioneering using the intrascleral cartilage. Angus received accolades from the Ophthalmological Society of Australasia for this work. He returned to Warrnambool to commence practice as an ophthalmologist, pioneering in artificial eye improvements. He was Honorary Consultant Ophthalmologist to Warrnambool Base Hospital for 31 years. He made monthly visits to Portland as a visiting surgeon, to perform eye surgery. He represented the Victorian South-West subdivision of the Australian Medical Association as its secretary between 1949 and 1956 and as chairman from 1956 to 1958. In 1968 Dr Angus was elected member of Spain’s Barraquer Institute of Barcelona after his research work in Intrasclearal cartilage grafting, becoming one of the few Australian ophthalmologists to receive this honour, and in the following year presented his final paper on Living Intrasclearal Cartilage Implants at the Inaugural Meeting of the Australian College of Ophthalmologists in Melbourne In his personal life Dr Angus was a Presbyterian and treated Sunday as a Sabbath, a day of rest. He would visit 3 or 4 country patients on a Sunday, taking his children along ‘for the ride’ and to visit with him. Sunday evenings he would play the pianola and sing Scottish songs to his family. One of Dr Angus’ patients was Margaret MacKenzie, author of a book on local shipwrecks that she’d seen as an eye witness from the late 1880’s in Peterborough, Victoria. In the early 1950’s Dr Angus, painted a picture of a shipwreck for the cover jacket of Margaret’s book, Shipwrecks and More Shipwrecks. She was blind in later life and her daughter wrote the actual book for her. Dr Angus and his wife Gladys were very involved in Warrnambool’s society with a strong interest in civic affairs. He had an interest in people and the community They were both involved in the creation of Flagstaff Hill, including the layout of the gardens. After his death (28th March 1970) his family requested his practitioner’s plate, medical instruments and some personal belongings be displayed in the Port Medical Office surgery at Flagstaff Hill Maritime Village, and be called the “W. R. Angus Collection”. The W.R. Angus Collection is significant for still being located at the site it is connected with, Doctor Angus being the last Port Medical Officer in Warrnambool. The collection of medical instruments and other equipment is culturally significant, being an historical example of medicine from late 19th to mid-20th century. Dr Angus assisted Dr Tom Ryan, a pioneer in the use of X-rays and in ocular surgery.Glass tube or cylinder with wide base and pouring lip. Measurements in ml and fl oz.flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, measuring device, measuring cylinder, glass -
Flagstaff Hill Maritime Museum and Village
Instrument - Hydrometer, 1878 to 1930s
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 -
City of Moorabbin Historical Society (Operating the Box Cottage Museum)
Measuring Equipment, circular slide-scale, 20thC
A mathematical slide rule Calculator used by engineers, mechanics, and similar tradesA typical precision slide rule used in City of Moorabbin 20thCA plastic, circular slide-ruleon face ; CIRCULAR 'CONCISE' SLIDE RULE MADE IN JAPAN on protector sleeve ; BASIL V R GREATREX PTY LTD / SYDNEY MELBOURNE / STEAM TRAPS / AIR DRYERS / ROTARY JOINTS / TEMPERATURE REGULATORS / HUMIDIFIERS / SPIRAL WOUND GASKETS,/ MECHANICAL PACKINGSmeasurements, slide-rule, slide scale, moorabbin, cheltenham, bentleigh, precision instruments, concise pty ltd -
City of Moorabbin Historical Society (Operating the Box Cottage Museum)
Tool - Brass balance 'Salters', c1900
In the 18th century, spring scales appeared. To produce these scales, a manufacturer would use the resistance of a spring to calculate weights, which could be read automatically on the scale’s face. The ease of use of spring scales over balance scales is what led most post offices to outfit their clerks with spring postal scales. One of the most common types of spring scales was the kitchen scale—also known as a family or dial scale. Designed for horizontal surfaces, these scales used the weight of goods in a pan at the top of the scale to force the spring down. Such scales were common in early-20th-century households and were sold by Sears and Montgomery Ward. Many had flat weighing surfaces but some were topped by shallow pans. Companies such as Salters, Chatillon, and Fairbanks made both. SALTER HOUSEWARES began in the late 1760 in the village of Bilston, England. At this time Richard Salter, a spring maker, began making 'pocket steelyards', a scale similar to the fisherman's scale of today. By 1825 his nephew George had taken over the company, which became known as George Salter & Co. and later established a large, well equipped manufacturing site in the town of West Bromwich. The business thrived throughout the 1900s, and in 1972 the company was purchased by Staveley Industries Plc. In 2002, the management team at Salter Housewares Ltd, backed by Barclays Private Equity, bought the company out from the group, to concentrate on its consumer businesses. In 2004 was sold to the US-based HoMedics company, and in 2006, Salter Housewares USA and Taylor Precision Products Inc (also owned by HoMedics) merged. A portable, brass balance scale , 'Salters' for weighing items. A steel ring holds a brass plate marked with graduations 0 – 26 to which is attached a steel hook. ( rope & arrow TM ) / SALTER / POCKET / BALANCE / MADE IN ENGLAND Graduated 0 – 26 / PATENT / No. 8 Base rope & anchor S (trade mark) pioneers, early settlers, market gardeners, moorabbin, brighton, cheltenham, tools, craftsman, balance, scales, weights, imperial measure,, salter housewares pty ltd, west bromwich, england, salter george, salter richard, bilston england, -
Flagstaff Hill Maritime Museum and Village
Equipment - Spring Balance Scale, George Salter & Co, 1920s
Scales such as the subject item were used to measure commercial quantities, possibly grains and farm produce for quite large amounts of product. Bags of grain etc would have been hooked up and weighed. Salter has been a name long associated with weights and measures. The firm began life in the late 1760s in the village of Bilston, England when Richard Salter, a spring maker, began making the first spring scales in Britain. He called these scales "pocket steelyards", though they work on a different principle from steelyard balances. By 1825 his nephew George had taken over the company, which became known as George Salter & Co. George later established a manufacturing site in the town of West Bromwich, about 4 miles (7 km) from Bilston. West Bromwich Albion football club was formed from workers at this works site. From here the company produced a wide variety of scales including the UK's first bathroom scales. Other items were added to the range, including irons, mincers, potato chippers, coin-operated machines and the first typewriters made in the UK. The business thrived throughout the 1900s, and by 1950 it employed over 2000 people, still in the same area and owned by the same family.Salter is a British housewares brand developing products that span a wide range of core product categories, including scales, electrical, cookware. It is a market leader in kitchen and bathroom scales and one of the UK’s oldest consumer brands. Established in 1760, Salter has been developing precision products for over 260 years. It was acquired by Manchester-based consumer goods giant Ultimate Products in 2021 after they had previously licensed the brand for cookware and kitchen electrical since 2011.Scale, Salter's improved spring balance, warranted. Brass and iron. Weighs 0 to 60LBS. Long rectangular brass instrument with ring attached to top and hook attached below. Centre of rectangle has long vertical slot with short, horizontal bar that slides down the slot when an object is suspended from the hook, showing its weight on the numbered scale beside the slot.Marked ""SALTER'S IMPROVED SPRING BALANCE"" and "WARRANTED". Weighs 0 to 60LBS. flagstaff hill, warrnambool, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, salter balance scale, weight measuring scale, weighing dry goods, domestic object, kitchen scale -
Flagstaff Hill Maritime Museum and Village
Equipment - Spring Balance Scale, George Salter & Co, 1920s
Scales such as the subject item were used to measure commercial quantities, possibly grains and farm produce for quite large amounts of product, also in a domestic situation. Bags of grain or other dry goods would have been hooked up and weighed. Salter has been a name long associated with weights and measures. The firm began life in the late 1760s in the village of Bilston, England when Richard Salter, a spring maker, began making the first spring scales in Britain. He called these scales "pocket steelyards", though they work on a different principle from steelyard balances. By 1825 his nephew George had taken over the company, which became known as George Salter & Co. George later established a manufacturing site in the town of West Bromwich, about 4 miles (7 km) from Bilston. West Bromwich Albion football club was formed from workers at this works site. From here the company produced a wide variety of scales including the UK's first bathroom scales. Other items were added to the range, including irons, mincers, potato chippers, coin-operated machines and the first typewriters made in the UK. The business thrived throughout the 1900s, and by 1950 it employed over 2000 people, still in the same area and owned by the same family.Salter is a British housewares brand developing products that span a wide range of core product categories, including scales, electrical, cookware. It is a market leader in kitchen and bathroom scales and one of the UK’s oldest consumer brands. Established in 1760, Salter has been developing precision products for over 260 years. It was acquired by Manchester-based consumer goods giant Ultimate Products in 2021 after they had previously licensed the brand for cookware and kitchen electrical since 2011.Scale, Salter's improved spring balance, warranted. Brass and iron. Weighs 0 to 25LBS. Long rectangular brass instrument with ring attached to top and hook attached below. Centre of rectangle has long vertical slot with short, horizontal bar that slides down the slot when an object is suspended from the hook, showing its weight on the numbered scale beside the slot.Marked ""SALTER'S IMPROVED SPRING BALANCE" "Number 2". Weighs 0 to 25LBS. flagstaff hill, warrnambool, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, salter balance scale, weight measuring scale, weighing dry goods, domestic object, kitchen scale, measure, weigh, measure ingredients, food preparation -
Flagstaff Hill Maritime Museum and Village
Equipment - Spring Balance Scale, George Salter & Co, 1930s
Scales such as the subject item were used in a domestic situation. Salter has been a name long associated with weights and measures especially in the home kitchen. The firm began life in the late 1760s in the village of Bilston, England when Richard Salter, a spring maker, began making the first spring scales in Britain. He called these scales "pocket steelyards", though they work on a different principle from steelyard balances. By 1825 his nephew George had taken over the company, which became known as George Salter & Co. George later established a manufacturing site in the town of West Bromwich, about 4 miles (7 km) from Bilston. West Bromwich Albion football club was formed from workers at this works site. From here the company produced a wide variety of scales including the UK's first bathroom scales. Other items were added to the range, including irons, mincers, potato chippers, coin-operated machines and the first typewriters made in the UK. The business thrived throughout the 1900s, and by 1950 it employed over 2000 people, still in the same area and owned by the same family.Salter is a British housewares brand developing products that span a wide range of core product categories, including scales, electrical, cookware. It is a market leader in kitchen and bathroom scales and one of the UK’s oldest consumer brands. Established in 1760, Salter has been developing precision products for over 260 years. It was acquired by Manchester-based consumer goods giant Ultimate Products in 2021 after they had previously licensed the brand for cookware and kitchen electrical since 2011."Scale Salter's Spring Balance brass cylinder with ring at one end and a hook at the otherSalter trademark stamped on front. Made in England stamped on back. Weighs 0 to 4LBS showing ¼lb increments.flagstaff hill, warrnambool, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, salter balance scale, weight measuring scale, weighing dry goods, domestic object, kitchen scale -
Federation University Art Collection
Sculpture - Mace, 'University Mace' by Trefor Prest, 1995
... suggestive of scientific or surveying and measuring technology... in a device suggestive of scientific or surveying and measuring ...The University's mace was carried in procession for the first time during the Graduation ceremonies in May 1996. The mace was presented to the University by former Chief Commissioner of the Ballarat City Council, Vern Robson, at a ceremony on 02 February, following a national competition for its design, sponsored by the Council. (The Flag, Issue 2, July 1996) Nineteen artists responded to the competition which called for a design that would embody a distinctive Australian image reflecting the heritage of the city and in relationship with gold, an Aboriginal element and the history of the University. The winning entry, dominated by a poppet head, was submitted by Central Victorian artist/sculptor Trefor Prest, a sessional lecturer in sculpture at the University.(The Flag, Issue 2, July 1996) The Herald Sun of 03 February 1996 reported 'the new mace shows importance elements of Ballarat's heritage as well as the university's focus on the future. The artist emphasises the egalitarian nature of Australia as embodied in Ballarat's famous slice of history - the Eureka uprising. ... The mace has a poppet head at the top of the shaft - an unusual element for a mace - but it represents Ballarat's mining history and the University's evolution from the Ballarat School of Mines. An opening egg at the top stands for the nurturing of development and learning. The mace's straight shaft is depicted as the tree of knowledge and, incorporating a bark canoe scar, Ballarat's Aboriginal heritage. At the end of the shaft is a surveying device, which represents precision and accuracy ads embodied in the university's academic pursuits.' Bob Morrell of the University organised the national competition to design the mace and said 'It is in keeping with the university's logo, 'proudly flying the flag', which incorporates the Southern Cross.' This item is part of the Federation University Art Collection. The Art Collection features over 1000 works and was listed as a 'Ballarat Treasure' in 2007. Trefor Prest lectured in Sculpture at the University of Ballarat from 1995-1996.The mace symbolises the office of the Chancellor. The design of the mace is the outcome of a national competition and represents the cultural diversity of Australia. The poppet head on the top of the mace refers to gold mining, which underpinned the development of Ballarat. The protruding spikes recall the Eureka Stockade. The 'egg' shape enfolds and nurtures the development of knowledge and learning. The shaft with the three 'branches' represents the Tree of Knowledge, and includes a bark canoe scar which recognises the integration of black and white Australian traditions. The lower part of the shaft culminates in a device suggestive of scientific or surveying and measuring technology. This represents precision and accuracy embodied in the academic pursuits of Federation University Australia.art, artwork, trefor prest, prest, mace, federation university, university, eureka stockade, aborigines, scarred tree, mining, university mace, ballarat -
Bendigo Military Museum
Photograph - Royal Australian Survey Corps Surveyors in the Field – Northern Territory and Queensland, 1959 – 1960
This is a set of 10 photographs of surveyors and support staff in the field undertaking duties in the Northern Territory and North Queensland in 1959 – 1960. The surveyors were employed in the establishment of mapping and geodetic control. In this era surveyors used theodolites to observe horizontal and vertical angles and tellurometers to measure base line distances between survey stations. Laplace survey observations seen in Photo .1P was a series of precise observations carried out at geodetic survey stations to determine astronomic latitudes, longitudes and azimuths to achieve maximum precision in the survey network. Laplace observations were necessary in a geodetic network at every 6th survey station, however the National Mapping Council specified at this time the spacing would be ideally between 4-6 survey stations. The cairn shown in photo .4P was built by RASvy as a landmark over a trigonometric survey station. It was dismantled in 1960 to enable re-occupation and survey observations. It was not restored to the condition shown in the photo.This is a set of 10 photographs of surveyors and support staff in the field undertaking duties in the Northern Territory (NT) and Queensland (QLD) in 1959 – 1960. The photographs were printed on photographic paper and are part of the Army Survey Regiment’s Collection. The photographs were scanned at 300 dpi. .1) - Photo, colour, 1959. Tony Slattery occupying a Laplace survey station on a hill in the Mount Young area of the NT. .2) - Photo, colour, 1959. Surveyors’ camp in the Mount Young area of the NT, L to R: Spencer Snow and Tony Slattery. .3) - Photo, colour, 1959. Surveyors’ camp in the Peckman Hill area, near Katherine in the NT. .4) - Photo, colour, 1959. Cairn on Trig Hill, Borroloola, NT. Built by Spencer Snow, Tom Royle and Jack McCabe. .5) - Photo, colour, 1959. Survey party taking a break next to their Austin Champ vehicle, in transit between Katherine, NT and Wyndam WA. L to R: Tony Slattery, Dave Owens, John Van De Graff. .6) - Photo, colour, 1960. Surveyors’ camp between Mount Isa, QLD and Borroloola, NT. L to R: Pat Cox and John Van De Graff prepare their meal on an open fire. .7) - Photo, colour, 1960. Surveyor - Dennis Woods undertaking survey observations, using MRA1 tellurometer to measure base-line distances NW of Mount Isa, QLD. .8) - Photo, colour, 1960. Unidentified surveyors assessing recovery of their stalled Studebaker truck vehicle after attempting a water crossing in the NT. .9) - Photo, colour, 1960. Unidentified surveyor making batches of bread at a camp in the NT. Seen in the photo placing a lid with hot coals onto the camp oven. .10) - Photo, colour, 1960. Unidentified survey party occupying a survey station on a hill in the Mount near the Lawn Hill area, NW of Mount Isa, QLD. A MRA1 tellurometer to measure base-line distances appear on the right side of the photo. .9) - Photo, colour, 1960. Unidentified surveyors assessing recovery of their stalled Studebaker truck vehicle after attempting a water crossing in the NT. .10) - Photo, colour, 1960. Unidentified surveyor making batches of bread at a camp in the NT. Seen in the photo placing a lid with hot coals onto the camp oven. .1P to .10P annotated on back – personnel names, the year and the location. royal australian survey corps, rasvy, army survey regiment, asr, army svy regt, fortuna, surveying -
Forests Commission Retired Personnel Association (FCRPA)
Gunter's Chain
Before metrication was introduced into Australia in the 1970s land was measured in chains and links. Many old parish plans show length measurements in chains and links. Area was shown in acres, roods and perches. Gunter's chain was used for measuring distance in surveying. It was designed and introduced in 1620 by English clergyman and mathematician Edmund Gunter (1581–1626). Gunter developed the measuring chain of 100 links. The chain and the link, became statutory measures in England and subsequently the British Empire. After metrication units of length were measured in meters and area in hectares. The chain was later superseded by steel ribbon tape.The 66 foot long brass Gunter's Chain is divided into 100 links (each 7.92 inches long), and marked off into groups of 10 by shaped tags which simplify intermediate measurement. It was heavy but flexible enough to be dragged through the bush on surveying transects.(Hence the common forestry term "chainman). The chain was a precision part of a surveyor's equipment. It required frequent calibration, yet needed to be sturdy enough to be dragged through rough terrain for years. It has brass hand grips at each end of chain. 1 chain = 100 links = 22 yards = 66 feet = 792 inches. 10 chains = furlong 80 chains = 1 mile 1 acre = 10 square chains = 4 roods (1/4 acre) = 40 perches.forest measurement, surveying, forests commission victoria (fcv)