Showing 12 items
matching micrometer
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Federation University Historical Collection
Scientific Instrument, The Precision Tool and Instrument Co Ltd, Micrometer eyepiece
Black and brass features, metal barrel and thimble. Housed in Black plastic box with blue interior and brass clip. The Precision Tool and Instrument Co Ltd, Surrey, England on the eyepiece. On the top of the box is inscribed The Precision Tool and Istrument Co Ltd, Thornton Heath, Surrey, Eng. On the box is a black label with white writing "Micrometer Eyepiece".micrometer eyepiece, eyepiece, micrometer, the precision tools and instrument co ltd -
Moorabbin Air Museum
Pamphlet (Item) - Care And Use Of The Micrometer
Issued By Ministry Of Munitions Commonwealth Of Australia -
Numurkah & District Historical Society
Equipment - Scales
Cast iron Micrometer scales mounted on rectangular marble base, (from Brown Corke & Co)Dodge Scale Co. Patented 1898 -
The Ed Muirhead Physics Museum
Meldometer, Joly
Joly Meldometer The Joly meldometer was created to determine the melting point of minerals. W.E. Wilson, an astronomer and author, stated in 1900 that the Joly meldometer consisted of a ‘a strip of platinum on which minute fragments of any mineral can be placed, while any alteration in its length can be determined by means of a micrometer screw which touches a lever connected with one end of the strip. The strip can be heated by an electric current, and is calibrated by observing the micrometer readings corresponding to the temperatures at which some substances of known melting-points melt’i . One reason why the Joly meldometer was seen as a successful addition to science was the small amount of any substance that it required for testing. Only a minute sample was needed for the instrument to work and so a tiny part could be taken from a delicate item without destroying itii . The instrument was originally manufactured by the Irish company Yeates & Son of Dublin. The Yeates family business was established in the early 1790’s and is thought to have operated until approximately 1922iii . Their business slogan was recorded as ‘Instrument makers to the University’, a slogan which proudly exhibited their relationship with Trinity College, Dublin. The company was located directly opposite Trinity College, the place where the Joly meldometer was created. Working in such close proximity must have assisted this business relationship. The inventor of this meldometer was Irishman John Joly. Joly was born in 1857 at the Church of Ireland Rectory, Hollywood House. His education led him to Trinity College Dublin where, by 1891, he had obtained a Bachelor of Engineering degree as well as a Doctorate of Science. The entirety of his working life appears to have taken place at Trinity College although he is known to have travelled in order to consult with other scientists such as the world renowned Sir Ernest Rutherford. The Joly meldometer was used for a variety of different purposes, with scientists often adapting the instrument to suit their own needs. For instance, the previously mentioned astronomer W.E. Wilson adapted the meldometer to assist him in measuring the radiation of the suniv . Joly used his device in an attempt to ascertain the age of the earth. In 1913, along with Sir Rutherford, Joly came to the conclusion that the earth was approximately 400 million years old. They did this by analysing the decay of radioactivity in minerals. According to our present knowledge of the earth this was a much more accurate date than the dates Joly had previously derived. He had first thought that the earth was 97 million years old due to the volume of sodium in the oceans. Joly’s second analysis of the topic had resulted in the age of 80 million years. This figure was based on the accumulation of sediment. Apart from designing his meldometer, Joly is also remembered for his work with colour photography. In 1894 Joly discovered a method for creating colour photographs from a single platev . He also studied the use of radiation as a treatment for cancer and persuaded the Royal Dublin Society to establish the Radium Institute to assist hospitals. In 1933 Joly passed away at the age of seventy-six. Jacqueline Eager Student Projects Placement, Cultural Collections 2005 iMollan, Charles, Irish National Inventory of Scientific Instruments, Samton Limited, 1995, p. 302. iiJoly, John, 'On the determination of the melting points of minerals, Part 1. Uses of the meldometer', Proceedings of the Royal Irish Academy, Vol. 2., 1891. iiiInstitute for Learning Technologies, "Stephan Mitchell Yeates' http://www.ilt.columbia.edu/projects/bluetelephone/html/yeates.html, accessed on 04.10.2005 ivMollan, Charles, Irish National Inventory of Historic Scientific Instruments, op cit. vMollan, Charles, The Mind and the Hand: Instruments of Science 1685-1932, Samton Limited, Dublin, 1995, p. 34.The following from #2975 in UDE UNIVERSITY COLLEGE DUBLIN ENGINEERING list in the “Irish National Inventory of Historical Scientific Instruments” by Charles Mellon (P/C in file for Cat no 272. “....meldometer as an instrument ‘for the purpose of finding the melting-points of minerals, hence its name. As used by him (Joly), it consists of a strip of platinum,on which minute fragments of any mineral can be placed, while any alteration in its length can be determined by means of a micrometer screw which touches a lever connected with one end of the strip. The strip can be heated by an electric current, and is calibrated by observing the micrometer readings corresponding to the temperatures at which some substances of known melting-points melt’.” Ref. : J. Joly, Proc. Roy. Irish Acad. 3rd series vol 2 (1891),38-64. -
Federation University Historical Collection
Scientific Instrument, Spherometer
A spherometer is an instrument for the precise measurement of the radius of curvature of a sphere or a curved surface. Originally, these instruments were primarily used by opticians to measure the curvature of the surface of a lens. A fixed-frame tripod with adjustable central contact screw, equipped with micrometer scale. Brass construction with steel contact points. Designed for measuring curvature of lenses. Stored in a polished timber box. Made specially for Silberberg and Co. Ltd. Melbournescientific instrument, spherometer, h.b. silberberg & co ltd -
The Ed Muirhead Physics Museum
Slides, Test with box
8 micrometer (microscope) test slides stored in wooden box with storage slots. Cardboard label inside box: “From Melbourne University Physics Dept Museum. Probably Grayson trials or William Stone” “ Microrulers/W S” on lidOn box: “Micronmemters W.S.” On 43.2: unlabeled, with glass rectangle 30x10mm cemented on microslide On 43.3: red and gold emblem/”Micronmemter 100 and 1000 in an inch” On 43.4: “Depth 0.10 mm; contents of 4 squares 0.001 C.mm ” On 42.5: unlabeleed square 9 x 7 mm. On 43.6: “1/100 1/500 inch” On 43.7: “200/inch 500/ inch 1000/ inch 2000/ inch” On 43.8: “1/100 1/500 inch” On 43.9: “Heavy lines up to 70,000. Higher Lines broken up” : “120X”(??) -
Bendigo Historical Society Inc.
Document - IAN DYETT COLLECTION: AUCTION CATALOGUE - COMMONWEALTH DISPOSALS COMMISSION
Three Auction catalogues for a sale on 28th March, 1946 of Extensive Surplus Equipment including Perspex, Rubber and Amoric Hose, Paint, Micrometers, Vices, Mess Canteen Plant, Excellent Tools and Miscellaneous Equipment at Commonwealth Disposals Commission, No. 1 Auction Depot, Garden City, Port Melbourne. Columns for £, S and D on the right side of the page. Contains descriptions of some lots. J. H. Curnow & Son were the auctioneers. The Prahran Telegraph Printing Co. were the printers of the catalogue.business, auctioneers, j h curnow & son pty ltd, ian dyett collection - auction catalogue - commonwealth disposals commission, j h curnow & son, j l jamieson, w g wedd, the prahran telegraph printing co, park orchards, dept. of navy -
J. Ward Museum Complex
Instrument - Microscope - Angular Pathology Model, Mid 1800's
Microscope were essential medical tools in diagnosing blood and tissue samples of patients. Microscopes were used at Ararat Mental Hospital from the time of its opening. The microscope is significant as an example of medical equipment used at the mental institution in the 1800's.This microscope sits in an flat tripod, much like the American style foot. It has an inclination joint. The mirror is on a double jointed arm, allowing oblique illumination and above stage illumination of opaque objects. The substage ring fitting can be removed to allow for extremely oblique lighting. Removing the ring is easy as it is fixed by a simple bayonet arrangement. Many microscopes had a bullseye condenser which attached to the stage, but this is lacking in this example, perhaps because the mirror can articulate above the stage. Coarse focus is by straight rack and pinion, fine by micrometer screw acting on the stem. There is an extendable drawtube which extends to allow optimal use of the objectives and a single objective and ocular are present. The microscope is missing pieces such as glass slides and two side braces.R & J Beck London Serial Number: 7925microscope, pathology, medical equipment, biospsy -
City of Moorabbin Historical Society (Operating the Box Cottage Museum)
Equipment - Barbers’ Equipment, hair clippers steel 'Brown & Sharpe", c1940
1833 Brown & Sharpe was founded in Providence, Rhode Island by David Brown and his son Joseph R. Brown. David Brown retired in 1841 and Joseph Brown formed a partnership with Lucian Sharpe in 1853. During the 19th and 20th centuries, Brown & Sharpe was one of the best-known and most influential machine tool builders and was a leading manufacturer of instruments for machinists (such as micrometers and indicators ) and helped establish: The American wire gauge (AWG) standards for wire; The Brown & Sharpe taper in machine tool spindle tapers; and The Brown & Sharpe worm threadform for worm gears. .Like most machine tool builders, Brown & Sharpe rode a business cycle roller coaster during 1920- 40. After being kept very busy during World War I, builders suffered a slump in the post–World War I recession and depression of 1920–21. The Roaring Twenties brought renewed sales, but then the Great Depression slashed them. The armament-build-up period of 1936 to 1940 again renewed machine tool activity, and then the World War II materiel effort exploded demand, pushing it to record heights and employed 11,000 workers. Brown and Sharpe machine tools were a mainstay of American metal manufacturing until the late 20th Century and could be found in most machine shops and factories that worked with metal. Brown and Sharpe made callipers and micrometers that were essential to products built to fine tolerances. Shortly after World War II, Henry D. Sharpe, Jr. succeeded his father as president of Brown & Sharpe Manufacturing Company, at which point it evolved into a new and modern company built, or at least designed, to last. The firm stopped producing its old stalwarts: sewing machines, hair clippers, and certain categories of machine tools and employment dropped to 3,500 in 1976. Due to industrial disputes in the 1980’s B&S started focusing more on developing Coordinate-Measuring Machines. The company began to lose money as it shifted production away from machine tools and toward advanced metrology equipment, losing $14.6 million in 1990 and employed only 700. In 1994 Brown & Sharpe acquired DEA of Italy, an established manufacturer of CMMs. In 2001, substantially all of the assets of the Brown & Sharpe Manufacturing Company, including the intellectual property, designs, trademarks, facilities and inventory, were acquired by Hexagon AB, Switzerland, without the acquisition of the Brown & Sharpe Manufacturing Company itself. A set of manual barbers’ hair clippers with an adjustable wing screw, from Brown and Sharpe, Manufacturing Company Ltd., Providence, Rhode Island, USA. Chrome plated, in fair condition, c1940on Right handle; MADE BY BROWN & SHARPE MFG. CO. POV. R.I. / PAT'D IN GREAT BRITAIN, EN FRANCE, S.G.D.G. / U.S.A. PATENTS JULY 1-79, JUNE 3-84, AUG 23- 92 on top blade ; BRESSANT / TRADEMARK on base of lower blade ; No. 2* barbers, hairdressers, hair clippers, brown and sharpe manufacturing company, providence rhode island, hexagon ab, switzerland, great britain, france, ww1 1914-1918, ww11 1939-1945, great depression 1930, micrometers, tools, precision instruments, brown david, brown joseph r , sharpe lucian, sharpe henry d jnr, american wire gauge standard, sewing machines, metrological tools, worm gears, spindle tapers, screw machines, moorabbin, bentleigh, cheltenham, city of moorabbin industries, -
The Ed Muirhead Physics Museum
Meldometer, Joly
The Joly meldometer was created to determine the melting point of minerals. W.E. Wilson, an astronomer and author, stated in 1900 that the Joly meldometer consisted of a ‘a strip of platinum on which minute fragments of any mineral can be placed, while any alteration in its length can be determined by means of a micrometer screw which touches a lever connected with one end of the strip. The strip can be heated by an electric current, and is calibrated by observing the micrometer readings corresponding to the temperatures at which some substances of known melting-points melt’i . One reason why the Joly meldometer was seen as a successful addition to science was the small amount of any substance that it required for testing. Only a minute sample was needed for the instrument to work and so a tiny part could be taken from a delicate item without destroying itii . The instrument was originally manufactured by the Irish company Yeates & Son of Dublin. The Yeates family business was established in the early 1790’s and is thought to have operated until approximately 1922iii . Their business slogan was recorded as ‘Instrument makers to the University’, a slogan which proudly exhibited their relationship with Trinity College, Dublin. The company was located directly opposite Trinity College, the place where the Joly meldometer was created. Working in such close proximity must have assisted this business relationship. The inventor of this meldometer was Irishman John Joly. Joly was born in 1857 at the Church of Ireland Rectory, Hollywood House. His education led him to Trinity College Dublin where, by 1891, he had obtained a Bachelor of Engineering degree as well as a Doctorate of Science. The entirety of his working life appears to have taken place at Trinity College although he is known to have travelled in order to consult with other scientists such as the world renowned Sir Ernest Rutherford. The Joly meldometer was used for a variety of different purposes, with scientists often adapting the instrument to suit their own needs. For instance, the previously mentioned astronomer W.E. Wilson adapted the meldometer to assist him in measuring the radiation of the suniv . Joly used his device in an attempt to ascertain the age of the earth. In 1913, along with Sir Rutherford, Joly came to the conclusion that the earth was approximately 400 million years old. They did this by analysing the decay of radioactivity in minerals. According to our present knowledge of the earth this was a much more accurate date than the dates Joly had previously derived. He had first thought that the earth was 97 million years old due to the volume of sodium in the oceans. Joly’s second analysis of the topic had resulted in the age of 80 million years. This figure was based on the accumulation of sediment. Apart from designing his meldometer, Joly is also remembered for his work with colour photography. In 1894 Joly discovered a method for creating colour photographs from a single platev . He also studied the use of radiation as a treatment for cancer and persuaded the Royal Dublin Society to establish the Radium Institute to assist hospitals. In 1933 Joly passed away at the age of seventy-six. -
Moorabbin Air Museum
Booklet (Item) - Aeronautical engineering series ground engineers By William Townsend Includes details on rivets tubes bending metals case hardening micrometers soldering taps and dies, The Aircraft Bench Fitter
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Federation University Historical Collection
Book, Ballarat School of Mines Principal's Reports,1923-1934
Red hard covered book with hand written reports by A.F. Heseltine. 23 February 1922 - Sickness of Dick Richards 18 August 1926 - Mrs Weston, sister of Alfred Mica Smith, donates photos of the professor.ballarat school of mines, a. f. heseltine, dick richards, r.w. richards, j.p. chard, j. tung, g.l. nicholls, arc lamp, telephone mechnics class, l.a. archibald, visits, associated smelters, iron knob, arbor day, w.h. finlayson, ethel campbell, repatriation, xray, x-ray, plumbing, alfred bayley, w. knight, mica smith scholarship, w.h. findlayson, herald shield, j.d. o'laughlin, e. schache, brown and sharp micrometer, h.r murphy, a. cornish, w.h. steane, l. hillman, l. vernon, kalgoorlie excursion, james peart, e.a. brophy, n.g. king, r. young, j.m. sutherland, woolclassing, yallourn, v. dorron, ballarat school of mines literary society, w. hollway, s. palmer, albert street, j.r. elsworth, ballarat school of mines caretaker, e. watson, j.r. pounds, m.s. kewkins, battery, m.g. rumpff, j. eldridge, eureka progress association, cyanide plant dismantle, materia medica, t. henderson, w.s. rackham, m. dean, new guinea goldfields, gala day