.1 - Book - 8 pages + grey covers, side stapled, issued by the Australian Standards Association, "Electrical Voltages and electrical frequencies for new installations ", C1 (a&b) - 1926, December 1926. .2 - Book - 36 pages + grey covers, side stapled, issued by the Australian Commonwealth Engineering Standards Association, Tentative Australian Standard - "Overhead Line wire material for telegraph and telephone purposes", C3-11-1925, November 1925. .3 - Book - 20 pages + brown covers, side stapled, issued by the Australian Commonwealth Engineering Standards Association, Tentative Australian Standard - "Telephone cable, paper insulated lead covered", C12 - 1928, January 1928. .4 - Book - 24 pages + grey covers, side stapled, issued by the Australian Commonwealth Engineering Standards Association, Tentative Australian Standard - "Marking for Switchboard bus-bars and connections" C13 - 1925, December 1925 - with a pasted green label noting that the "tentative standard is now endorsed as Australian Standard without amendment" - dated Oct. 1930. .5 - Book - 32 pages + grey covers, side stapled, issued by the Australian Standards Association, Tentative Australian Standard "Dimensions and Resistances of Bare Annealed Copper Wire for Electrical Machinery and Apparatus", C 18-1926, October 1926. .6 - Book - 12 pages + grey covers, side stapled, issued by the Australian Commonwealth Engineering Standards Association, Tentative Australian Standard "Slate Slabs for Electrical Purposes", C19 - 1926, July 1926. .7 - Book - 16 pages + grey covers, side stapled, issued by the Australian Commonwealth Engineering Standards Association, Tentative Australian Standard - "Moulded Flat Top Insulation Bushes" C20-1926, October 1926. .8 - Book - 16 pages + brown covers, side stapled, issued by the Australian Commonwealth Engineering Standards Association, Australian Standard "Insulation dimensions and resistance of enamelled plain copper wire for instruments and apparatus" C21-1928, January 1928. .9 Book - 20 pages + grey covers, side stapled, issued by the Australian Commonwealth Engineering Standards Association, Tentative Australian Standard - "Watertight Glands for electric cables" C22-1926, September 1926. .10 - Book - 20 pages + grey covers, side stapled, issued by the Australian Commonwealth Engineering Standards Association, Tentative Australian Standard - "Air-break knife switches and laminated brush switches for voltages not exceeding 660Volts" - C23 - 1926, August 1926" On top right hand corner has the date stamp of the "The Electric Supply Co. of Victoria Ltd Ballarat" trams, tramways, power station, standards, materials, electrical systems

Prepared by Preston Workshops staff, in the Truck Shop, to show the electrical apparatus line diagrams for testing of motors in a bogie or truck.Demonstrates the equipment used to test tramcar bogies or trucks prior to fitting to a tramcar.Drawing - dyeline print taped and edged to a piece of masonite. Has two screw holes for mounting on either side.trams, tramcars, bogies, trucks, truck shop, preston workshops, electrical engineering, electrical equipment

This protection relay apparatus (a large electrical fuse), which permits the easy monitoring and disconnection of faulty electrical apparatus connected to the large SEC Victoria Hydro Scheme's electrical power producing generators. These generators are powered by the hydro force of "stored" water at a higher altitude. The establishment of both the NSW and Victorian Hydro Schemes was achieved from the early 1900's to the 1960's. At this point in time the need for additional power sources to quench both an industrial and domestic demand for electricity was purely an economic and not and environmental (carbon reduction) factor. This hydro scheme was instigated by "the Government of the day" as a bold move and was the major force of the World War II refugee and "technical" workforce inclusion of skilled and unskilled migration into the Australian environment. Although this mass "invasion" of workers with families was thought of in some circles as intrusive, the expansion of population post war years and its integration into the Australian rural sector, produced the multi- lingual multi-cultural diversity of later years.This protection relay is very significant to the Kiewa Valley as its use was introduced during the Kiewa Hydro Scheme. Although only a small apparatus it was part of the explosion of human resources into the valley. This influx of population transformed the region from that of a basically quiet rural region to one which evolved into both an industrial and a larger residential community. This evolution in the valley created a change, not only in the "physical" landscape but also the socio-economic expansion which permitted other "tourist" based industries into the valley.This protection relay unit has a black painted metal shell with four copper enclosed "prongs" fastened to the rear of the housing(from a bake-lite plate) . Between these "prongs" are four "empty" points allowing additional "screw on" bases. The front glass enclosed meter and recorder allows for the identification and automatic disconnection of any faulty equipment connected to the main power generator. This equipment acts similarly to a modern day circuit breaker found on the electrical circuit boards of residential homes.On the top section of the front panel "ASEA" to the left "Made in Sweden" and to the right "Frabrique en Suede" below this "RIS" below this a graph and next to it two columns of numbers and a pointer for each setkiewa hydro electricity scheme, victorian state electricity commission, relays, generators

This Favag Timer apparatus was a part of the first electronic control system -(1960's), in Victoria), which worked using telephone stepping selectors to convey a change in voltage providing a regulated pulse from the control centre(Mount Beauty) to the remote Power Stations opening and closing (stop/start) of various devices at the Power Station and a return signal confirmed the action taken. Testing of this unit was carried out using a "dummy" device at the remote Power Station so as not to disrupt the power plant's operation. This timer was one of many electrical apparatus connected to the large SEC Victoria Hydro Scheme's electrical power producing generators. These generators are powered by the hydro force of "stored" water at a higher altitude. The establishment of both the NSW and Victorian Hydro Schemes was achieved from the early 1900's to the 1960's. At this point in time the need for additional power sources to quench both an industrial and domestic demand for electricity was purely an economic and not and environmental (carbon reduction) factor. This hydro scheme was instigated by "the Government of the day" as a bold move and was the major force of the World War II refugee and "technical" workforce,inclusion of skilled and unskilled, migration into the Australian environment. Although this mass "invasion" of workers with families was thought of in some circles as intrusive, the expansion of population post war years and its integration into the Australian rural sector, produced the multi- lingual multi-cultural diversity of later years.This Favag Timer was one of the crucial pieces of equipment that made it possible for the Mount Beauty Terminal Station to control the operations of these Power Stations; McKay, Clover, West Kiewa Power Stations and the Dederang Terminal Station.This aluminium and anodised "FAVAG" (pulse) timer is fastened to a base structure which comes with its own metal cover that is fastened by two metal hooks. From the top of these hooks runs a thick leather "carry" strap.The instrument, itself, a small "micro motor" at one end tape feeding spool on the other. Aluminium metal structures offer a preventative barrier against any electronic spikes from static electricity sources. There are two toggle switches to the bottom right hand side and twelve coloured "pin" connection points.There is a sliding access sleeve which exposes a circuit board.with various leads fastened on each side. In front of one of this slide are two "screw in" fuses, spare fuses are in a small envelope taped above. Circuit diagrams are etched white on black background on the top face of the main structure. At the base of the back section is a two pronged input terminal. There is a fine black rubber layer (cushioning) for the mian top cover.On the cover fastened with two rivets "FAVAG" underneath in small print "Fabrique d'appareils electriques S.A." underneathe "NEUCHATEL-SUISSE". on one end is a "STATE ELECTRICITY COMMISSION OF VICTORIA" metal label screwed on.The back label has manufacturers' type and model number.sec vic kiewa hydro scheme, alternate energy supplies, alpine population growth

Megger as the device was called, is in fact its brand name. It is a device that supplies a DC (direct current as per car batteries) voltage to enable testing of electrical apparatus. This particular device produces 250volts DC when the handle is turned vigorously. If an electrical device, such as a kettle or toaster, blew a fuse or tripped a circuit breaker, when switched on, then it must be checked electrically before any more use. Following the repair of the faulty item a megger would be used to check if either of the AC 240volt plugs leads were touching the metal case (earth). The output leads of the megger would be connected with one to the earth (metal case) and the other to each of the power connections in turn. A good megger reading of 50,000 ohms (resistance) would enable the device to be returned to service. A reading of zero ohms resistance would mean that it would again blow a fuse, and was therefore unsafe to use. In the electrical industry e.g. the former State Electricity Commission, a megger would be used to test lots of similar item in sequence. Because of the vigorous job of winding the handle, two persons were often used to save time. One would crank madly whilst the other shifted the leads. This particular megger is of a small voltage, but other meggers are bigger and have a few ranges of DC voltages able to be selected. The optimal megger for large Generating machines was motor driven megger. This was applied to the device being tested for a duration of approximately 30 minutes with reading of the resistance taken at regular intervals.All equipment belonging to the State Electricity Commission of Victoria was labelled with a metal plaque attached to it. The SECV constructed the Kiewa Hydro Electric Scheme in the Upper Kiewa Valley and on the Bogong High Plains. The scheme began in 1938 and finished in 1961 when this megger was used and also possibly later as the SECV remained to maintain and operate the Scheme. This megger is of significance in relation to the advancement of technology.A rectangular box in dark brown bakerlite casing. It has an agent's plaque fixed to the left of the face and on the right is the marker's recessed stamp. In the middle in a transparent window so the level of ohms can be read. The front also has two recessed fixing knobs in black. On one side is a crank handle with a knob that lifts up and is turned vigorously to create the voltage. The back has four recessed screws and four small leather pads. There is a hole on each side to insert wires. There are two copper insulated wires. The SECV Plaque states: State/Electricity Commission/of/Victoria/ Electrical Engineer's Section/ No.1747 The Agent's Plaque states: H. Rowe & Co. Pty Ltd/Melbourne & Sydney/Sole Agents/in Australia for/Evershed & Vignoles Ltd Maker's states: 500 volts/Megger/Regd Trade Mark/Made in England/Patent No/400728electrical meters, electrical equipment, fuses, safety, state electricity commission of victoria, mt beauty, bogong village

A black plastic folder containing a set of 38 General Electric Data Sheets for MMTB and tramway trust equipment, dated July 8 1924. Contained in folder with flexible clips. Pages have been punched with four holes. Copy of document made for BTM Feb 1998 by Doug Prosser. For scan of list - see btm780sheet.pdf General Electric Data for Car Equipment Maintenance Contents For scan see btm780d1 (5 pages) Title sheet Data contents summary sheet showing manual prepared for Melbourne & Metropolitan Tramways Board Including Footscray Tramway Trust Hawthorne Tramways Trust Melbourne, Brunswick and Coburg Tramway Trust Prahran and Malvern Tramways Trust. 2 sheets dated July 8, 1924 giving equipment schedules for the various operators, and diagrams. - hard to read the background sheet information. Does not reference the tramcars. For scan see btm780d2 (54 sheets - items 1 to 27) 1. Methods of Removing the Armature from Box Frame Railway Motors Dated 9/1924, 7 pages 2. Instructions for order Magnet Frames for Railways and Mine Haulage Motors 2 pages, not dated 3 Winter Covers for Ventilated Railway Motors - 2 pages 4 Better Commutation for Railway Motors - 1 page 5 Commutator Grooving Machines - 1 page 6 Railway Motor Armature Coils - 2 pages 7 Carbon Brushes for Railway motors - including brush pressure adjustment - 2 pages 8 Renewable Carbon-Way Brush holders for Railway Motors - 2 pages 9 Commutator Grooving Machines (2nd version) - 2 pages 10 The Repair of Railway Motor Commutators - 3 pages 11 Dimensions of Electrical Apparatus used with 600-volv Type PC railway control equipment, (Sheet 15380, dated 2/1/1924) - 1 sheet including · US-13-E Trolley Base, · MS-118-A main switch, · MA-13-F Fuse Box, · MD3 - lightning Arrester, · BJ-386-B Distributing Box, · Type BG Railway Resistors. 12 Connections of Type KM-63-BR Railway Controllers and Equipment - Drawing 15257, 1 page, dated 1/3/1921 with dimension details on rear of type K-63-BR railway controller equipment including: · SG Resister, · BK-13-A Insulator, · MR11 - Circuit breaker, · MD3 - Lightning Arrester box, · K63-BR Controller, · US15C Trolley Base. 13 Method of Supporting Railway Resistors using Porcelain Bolt insulators for 600 and 1500 Volt Work. Drawing dated 1/11/1923, No. 15249B - 1 page 14 Dimensions of Electrical Apparatus used with 600-volv Type M railway control equipment, (Sheet 15381, dated 2/1/1924) - 1 sheet including · US-13-E Trolley Base, · MS-118-A main switch, · MA-13-F Fuse Box, · MD3 - lightning Arrester, · BJ-386-B Distributing Box, · Type BG Railway Resistors. 15 Dimensions of Electrical Apparatus used with 600Volt, Type PC Railway Control Equipment. Drawing No. 15382, dated 2/1/1924. Includes: · C129-A Master Controller, · DA82C Coupler sockets, · MS-14-G switch, · MS-46-H switch. 16 Dimensions of Electrical Apparatus used with 600-volv Type M railway control equipment, (Sheet 15383, dated 2/1/1924) - 1 sheet including · C-169-A Controller · DA-69-B Coupler Socket and DC-66-C Coupler Plug · MS-14-G Switch · MS-46-H-Switch 17 Method of Making Tap Connections for Car Cables -= SD 15468, 1/11/1924, 1 page 18 The Repair of 600 Volt Railway Motor Armatures, 64408, 9/2/1924, 4 pages 19 Proper Method of Mounting and Dismounting Railway Motor Pinions. - 2 pages 20 Pinion Pullers for Railway Motors - 2 pages, dated 8/1/1924. 21 The Care of Railway Motor Bearings - 4 pages 22 Oil Scraper Rings for Air Compressors - 64590 - May 1924 - 1 page 23 Finger Bases for type K 63 controller 1 page 24 Adjustment of Drum Controller fingers - 29/1/1924, 64600A - 1 page 25 Star Wheels for Type K Controllers - 64603 - 1 page 26 Soldering Aluminium Controller Cylinder Castings - 2 pages 27 Porcelain Bolt Insulators for Railway Service - and drawing on rear showing mounting arrangement of resistor Grids - 2 pages. For scan see btm780d3 (13 pages) 28 Connections of Armature and Field Winding for GE-201-F and GE 263A railway motors. DS37869 29 Connections of Armature and Field Winding for GE-201-I railway motors. K1629303 30 Connections of Armature and Field Winding for GE-202 motor, DS 10472 31 Connections of Armature and Field Winding for GE-203 A and GE 226 railway motors. DS23869. 32 Connections of Armature and Field Winding for GE-241 motors - K1629077 33 Connections of Armature and Field Winding for CP25A Air compressor 34 Connections of Armature and Field Winding for CP27A Air compressor 35 Connections of Armature and Field Winding for GE-258 and GE 264 railway motors. K1629343. 36A- Dimensions of Type K-63-BR Railway Controller Equipment 36 US-13-E Trolley Base for Railway Service - 3/1/1923, 64823 - 2 pages 37 Copy of M&MTB (Eastern System) Certificate of Competency as Motorman. 38 Photocopies of a series of four photos of 22E trucks under an SEC tramcar. For scan see btm780d4 (40 pages) 39 Sprague G-E Multiple Unit Control, Type PC, Instruction Book 84772 - Oct. 1922 - 40 Pages. Images of sheets added 2-11-15 trams, tramways, general electric, motors, controllers, trolley pole bases

Kelvin Company History: The origins of the company lie in the highly successful, if strictly informal, the relationship between William Thomson (1824-1907), Professor of Natural Philosophy at Glasgow University from 1846-1899 and James White, a Glasgow optical maker. James White (1824-1884) founded the firm of James White, who was an optical instrument maker in Glasgow in 1850. He was involved in supplying and mending apparatus for Thomson's university laboratory and working with him on experimental constructions. White was actually declared bankrupt in August 1861 and released several months later. In 1870, White was largely responsible for equipping William Thomson's laboratory in the new University premises at Gilmore hill. From 1876, he was producing accurate compasses for metal ships to Thomson's design during this period and this became an important part of his business in the last years of his life. He was also involved in the production of sophisticated sounding machinery that Thomson had designed to address problems encountered laying cables at sea, helping to make possible the first transatlantic cable connection. At the same time, he continued to make a whole range of more conventional instruments such as telescopes, microscopes and surveying equipment. White's association with Thomson continued until he died. After his death, his business continued under the same name, being administered by Matthew Edwards (until 1891 when he left to set up his own company). Thomson, who became Sir William Thomson and then Baron Kelvin of Largs in 1892, continued to maintain his interest in the business after James White's death in 1884, raising most of the capital needed to construct and equip new workshops in Cambridge Street, Glasgow. At these premises, the company continued to make the compass Thomson had designed during the 1870s and to supply it in some quantity, especially to the Admiralty. At the same time, the firm became increasingly involved in the design, production and sale of electrical apparatus. In 1899, Lord Kelvin resigned from his University chair and became, in 1900, a director in the newly formed limited liability company Kelvin & James White Ltd which had acquired the business of James White. At the same time Kelvin's nephew, James Thomson Bottomley (1845-1926), joined the firm. In 1904, a London branch office was opened which by 1915 had become known as Kelvin, White & Hutton Ltd . Kelvin & James White Ltd underwent a further change of name in 1913, becoming Kelvin Bottomley & Baird Ltd . Hughes Company History: Henry Hughes & Sons was 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. This model compass is a good example of the commercial type of instruments made by Kelvin & Hughes after the world war 2, it was made in numbers for use on various types of shipping after the second world war and is not particularly rare or significant for it's type. Also it was made no earlier than 1947 as the firms of Kelvin, Bottomley & Baird Ltd and Henry Hughes & Sons Ltd who took over from Smith & Sons were not amalgamated until 1947. Given that Smith and Sons is engraved on the compass with Kelvin & Hughes it can be assumed that this compass was made during the company's transitional period to Kelvin & Hughes.Compass, marine or ship's card compass, gimble mounted, with inscriptions. Type is Lord Kelvin 10 inch compass card. Made in Great Britain by Kelvin Hughes Division of S. Smith & Sons (England) Ltd. "LORD KELVIN 10.", "COMPASS GRID", "MANUFACTURED IN GREAT BRITAIN BY", "KELVIN HUGHES DIVISION", "S. Smith & Sons (England) Ltd".flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, marine compass, gimble compass, ship's compass, lord kelvin compass, smith and sons england ltd, henry hughes & son ltd london england, kelvin bottomley & baird ltd glasgow scotland, kelvin & hughes ltd, navigation instrument, scientific instrument, william thomson, james white, baron kelvin of largs

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

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

The Victorian Gold Jubilee Exhibition, held at Bendigo from 13 November 1901 to 14 May 1902. The courts were numbered from one, or had titles like “Machinery”, “Agricultural”, “Naval & Military Court” and “Art”. The female visitors to the Exhibition were able to view exhibits deemed suitable for the fairer sex and located within their own “Women’s Court”. There were exhibits such as “Parasols & Umbrellas”, cotton and haberdashery from Manchester and Staffordshire, “Corsets & Embroideries” from Paris. The most valuable exhibits were mining machinery such as Taylor Horsfield’s £850 “Air Compressor & Rock Borer”. “Bohemian Glassware” brought down from Sydney was valued at £600. The profits from this Exhibition were used to fund the sculpture known as the Gold Monument, which still gazes along Pall Mall (from the McCrae Street end). The Exhibition’s Cash Book shows payments, which totalled £1160, were made to then up and coming sculptor C.D.Richardson. Recently a City of Greater Bendigo staff member used both these volumes to write a detailed report about this monument, for Heritage Victoria.Carol Holsworth Collection: Small book Souvenir, 29 pages plus cover; each page. has a photo of the exhibit. Exhibition was held on the site of the present Bendigo Library between Hargreaves St and Lyttleton Terrace. * 8662.1a Victorian Gold Jubilee Exhibition - Front Cover: Printed 'Souvenir', 'Bendigo 1901-1902'; a photo of the Entrance to the exhibition beside the Town Hall. * 8662.1b Victorian Gold Jubilee Exhibition - Inside Front Cover - Page 1 of 29. Portraits of Exhibition President S.H. Cowen esq.; and G.V. Allen esc., General Secretary. Photos by W.H. Robinson publisher. Printed by T. Cambridge, Market Square Bendigo. * 8662.1c Victorian Gold Jubilee Exhibition - Page 1 of 29 The Governor General at the Exhibition. Photo of the crowd, police, trooper and horse drawn vehicles. * 8662.1d Victorian Gold Jubilee Exhibition - Page 2 of 29 Procession Passing the Fountain, Pall Mall. The crowd and horse drawn vehicles. *8662.1e Victorian Gold Jubilee Exhibition - Page 3 of 29 James Martin and Co's Exhibit. James Martin & Co was an Australian engineering company which progressed from making agricultural equipment to making railway locomotives. * 8662.1f Victorian Gold Jubilee Exhibition - Page 4 of 29 Old Pioneers. Elderly gentlemen on foot and carriage - at the Bendigo Railway Station. * 8662.1g Victorian Gold Jubilee Exhibition - Page 5 of 29 Robert Harper and Company's Exhibit. From Trove - The Brisbane Courier 25 Aug 1891: One of the best known firms in the Southern hemisphere is Messrs. Robert Harper and Co , tea importers, coffee, rice, and spice merchants and manufacturers Then productions circle this continent, and every thrifty housewife is familiar with their Empire tens, their Star' brand of goods, then oatmeal, wheatmeal, and other breakfast table luxuries The headquarters of the firm are placed at Port Melbourne, and the manufactory there occupies over an acre of ground, while the mills at Sydney and Adelaide are as great in proportion It is eight cars since the firm opened business in this colony. The step was taken with much confidence, the principals the firm being quite attracted. * 8662.1h Victorian Gold Jubilee Exhibition - Page 6 of 29 The Electric Tram * 8662.1i Victorian Gold Jubilee Exhibition - Page 7 of 29 G. Weymouth Proprietary Ltd. The business of G. Weymouth & Co was founded in 1898 by George Andrew Philip Weymouth, who began operating from a small workshop on City Road, South Melbourne (opposite Princes Bridge). An early advertisement describes the firm's activities at this time as being 'makers of dynamos, (electric) motors, x-ray apparatus and electrical instruments, &c' together with 'repairs to every class of electrical work'. * 8662.1j Victorian Gold Jubilee Exhibition - Page 8 of 29 The Exhibition Fernery * 8662.1k Victorian Gold Jubilee Exhibition - Page 9 of 29 Cohn Bros'. Exhibit. In 1857 at the height of the gold rush, with people pouring into Central Victoria from all over the world, three brothers from Denmark – Moritz, Julius and Jacob Cohn – founded a small cordial factory in the booming town of Bendigo. They went on to build an empire and, through introducing lager, which is served cold, to the country, changed the drinking preferences of Australians. * 8662.1l Victorian Gold Jubilee Exhibition - Page 10 of 29 Ornamental Lake in the Exhibition Grounds * 8662.1m Victorian Gold Jubilee Exhibition - Page 11 of 29 Australian Explosives and Chemical Co.'s Exhibit. The Australian Explosives and Chemical Company began manufacturing explosives in Melbourne's outskirts (the area now known as Deer Park) in 1875. In 1897 the Company was purchased by Nobel, forming Nobel (Australasia) Ltd. * 8662.1n Victorian Gold Jubilee Exhibition - Page 12 of 29 Tasmanian Court * 8662.1o Victorian Gold Jubilee Exhibition - Page 13 of 29 N. Guthridge's Limited Exhibit. Guthridge sold a variety of mining supplies and equipment; also 'Rackarock' which was used to fill the mining drill holes before blasting. * 8662.1p Victorian Gold Jubilee Exhibition - Page 14 of 29 Navel and Military Court (LARGE File) * 8662.1q Victorian Gold Jubilee Exhibition - Page 15 of 29 Women's Court * 8662.1r Victorian Gold Jubilee Exhibition - Page 16 of 29 T. J. Connelly and Co's Exhibit. T.J. Connelly an American immigrant came to the Bendigo goldfields where he later established Connelly’s Tin Shop on the corner of High and Forest Streets 1853. Connelly was named after Thomas Jefferson the famous statesman who wrote much of the American Declaration of Independence in 1776 and became the third United States President. Connelly, along with other prominent citizens of the time established Bendigo’s first Fire Brigade, Mechanics Institute. * 8662.1s Victorian Gold Jubilee Exhibition - Page 17 of 29 The Potter's Wheel * 8662.1t Victorian Gold Jubilee Exhibition - Page 18 of 29 G. D. Guthrie and Co.'s Exhibit. In 1863 the Bendigo Pottery was set up by Guthrie. * 8662.1u Victorian Gold Jubilee Exhibition - Page 19 of 29 The Ladies' Committee * 8662.1v Victorian Gold Jubilee Exhibition - Page 20 of 29 J. Kitchen and Sons Exhibit. In Port Melbourne since the 1850s they made such products as Velvet Soap and Electrine Candles from the tallow and other animal fats from the nearby slaughter yards. In recent decades the company has become Kitchen & Lever then Unilever and most recently Unichema. * 8662.1w Victorian Gold Jubilee Exhibition - Page 21 1of 29 The Executive Committee * 8662.1x Victorian Gold Jubilee Exhibition - Page 22 of 29 Taylor Horsfield Exhibit. The most valuable exhibits were mining machinery such as Taylor Horsfield’s £850 “Air Compressor & Rock Borer” * 8662.1y Victorian Gold Jubilee Exhibition - Page 23 of 29 A Peep at the Education Department 8662.1z Victorian Gold Jubilee Exhibition - Page 24 of 29 John Danks and Co's Exhibit. John Danks & Son was a major manufacturing company in Melbourne, Victoria and Sydney, New South Wales. * 8662.1aa Victorian Gold Jubilee Exhibition - Page 25 of 29 Glance at the Agricultural Department's Court * 8662.1bb Victorian Gold Jubilee Exhibition - Page 26 of 29 T. York's Exhibit. Thomas York was an instrument repairer and brass instrument maker that resided in Melbourne in the late 19th to the early 20th century. While old newspaper advertisements suggested he repaired all instruments, it appears the focus of his business were military and brass band instruments. (BrassandWoodWind.com) * 8662.1cc Victorian Gold Jubilee Exhibition - Page 27 of 29 T. McPherson and Son's Exhibit. Possibly monumental masons. * 8662.1dd Victorian Gold Jubilee Exhibition - Page 28 of 29 T. Lewis and Whitty's Exhibit - Inside Back Cover. Lewis & Whitty were prominent boot blacking manufacturers as well as a number of other chemical products such as “Odourbane" disinfectant. * 8662.1ee Victorian Gold Jubilee Exhibition - Page 29 of 29 Singer Manufacturing Coy's Exhibithistory, bendigo, victorian gold jubilee exhibition bendigo, carol holsworth collection

Electroconvulsive therapy (ECT) was invented in Italy in the late 1930s. ECT is a medical treatment most commonly used in patients with severe major depression or bipolar disorder that has not responded to other treatments. Psychiatrists had already discovered that inducing seizures could relieve symptoms of mental illness. Before ECT, this was done with the use of chemicals, usually one called Metrazol. More can be read here: http://theconversation.com/electroconvulsive-therapy-a-history-of-controversy-but-also-of-help-70938 This machine was used both at Aradale Mental Hospital and J Ward. The object is significant because it is a well preserved instrument that illustrates the medical apparatus used at both Ararat Mental Hospital and J Ward for the treatment of mental illness.A metal instrument. The front contains three knobs, two switches, and power button. Two fully intact electrical cords - One leads to the paddles used on the patient: One used to attach to the electric source [power point]. Paddles are made of hard plastic and stainless steel metal. The back has a compartment where the paddles can be stored. The top has a carry handle.Manufacturer: Siemens Power supply: 220V 85AC, 50Hzmentalhealth, psychiatrichealth, depression, #bipolardisorder

This analog voltmeter is quite a large (industrial type) apparatus which permits the easy monitoring of electrical variations within the large SEC Victoria Hydro Scheme's electrical generators. These generators are powered by the hydro force of "stored" water at a higher altitude. The establishment of both the NSW and Victorian Hydro schemes was achieved from the mid 1900's to the 1960's. At this point in time the need for additional power sources to quench both an industrial and domestic demand for electricity was purely an economic and not and environmental (carbon reduction) factor. This hydro scheme was instigated by "the Government of the day" as a bold move and was the major force of the World War II refugee and "technical" workforce inclusion of skilled and unskilled migration into the Australian environment. Although this mass "invasion" of workers with families was thought of in some circles as intrusive, the expansion of population post war years and its integration into the Australian rural sector, produced the multi- lingual multi-cultural diversity of later years. This voltmeter is very significant to the Kiewa Valley as its use was introduced during the Kiewa Hydro Scheme. Although only a small apparatus it was part of the explosion of human resources into the valley. This influx of population transformed the region from that of a basically quiet rural region to one which evolved into both an industrial and a larger residential community. This evolution in the valley created a change, not only in the "physical" landscape but also the socio-economic expansion which permitted other "tourist" based industries into the valley. This analog volt meter has two metal rods protruding from the "back" of instrument with screw on points for the negative and the positive leads allowing the "current" to flow across the calibrated resistors to indicate on the "face" side the strength of the voltage "power". The "face" of the instrument has a zero point and then five evenly graduated marks from Zero to the "100, 200 and 300" marked points of measures. A large "V" below these pointers indicates that they represent levels of voltage. Three small screws hold the "face" in place. At the back of the meter is an aluminium "clasp" with three protruding screws (positioning fasteners) and a a screw tightening fixture for the correct fastening of the "clasp" into the correction location on the meter "board".Manufacturer's logo "CSG" underneath "ITALIA"kiewa valley tourism, victorian alps, alternate energy supplies, alpine population growth

This Timing Relay is quite a large (industrial type) apparatus. The Timer is started by having a voltage of 250 volts direct current (as supplied by batteries). A DC motor then rotates driving into a clockwork mechanism, the output of which is an arm rotating at the same speed as a minute hand on a clock. Attached to this arm is a mercury switch which tips and makes an electrical circuit operate in a sequence control system. The sequences that use these timers are when starting and stopping Hydro Generators. They check that the machine has connected to the power system grid before 20 minutes duration. Brakes must go on for a set time when shutting down a generator slowing at the right speed as measured by this apparatus. These generators are powered by the hydro force of "stored" water at a higher altitude. The establishment of both the NSW and Victorian Hydro schemes was achieved from the mid 1900's to the 1960's. At this point in time the need for additional power sources to quench both an industrial and domestic demand for electricity was purely an economic and not and environmental (carbon reduction) factor. This Timing Relay apparatus is very significant to the Kiewa Valley as its use was introduced during the Kiewa Hydro Scheme. Although only a relay apparatus, it was however part of the explosion of human resources into the valley. This influx of population transformed the region from that of a basically quiet rural region to one which evolved into both an industrial and a larger residential community. This evolution in the valley created a change, not only in the "physical" landscape but also the socio-economic expansion which permitted other "tourist" based industries into the valley. This Hydro Scheme was instigated by "the Government of the day" as a bold move and was the major force behind the acceptance of World War II refugee and "technical" workforce. Inclusion of skilled and unskilled migration into the Australian environment was of a higher priority than a selective quota system of later years.. Although this mass "invasion" of workers with families was thought of in some circles as intrusive, the expansion of population post war years and its integration into the Australian rural sector, produced the multi- lingual, multi-cultural diversity of later years.sec vic kiewa hydro scheme, alternate energy supplies, alpine population growth

This general purpose Multi-meter was manufactured after 1950 and used by the SEC Vic (Kiewa Hydro Electricity Scheme) from that date until late 1900's. It was used to measure very small voltages associated with the operation of the various Hydro Generators. The readings were able to be shown by the resistor in use in the current circuit. During this time period, high quality testing instruments were either sourced from Europe or England. This particular meter was manufactured in the Netherlands. This type of "old" analogue meter was replaced by digital meters whose electronic components are a fraction of the size of the older analogue ones.This analog General Purpose multi-meter is quite a large (for handheld mobile) apparatus which permits the easy monitoring of electrical variations within the large SEC Victoria Hydro Scheme's electrical generators. These generators are powered by the hydro force of "stored" water at a higher altitude. The establishment of both the NSW and Victorian Hydro schemes was achieved from the mid 1900's to the 1960's. At this point in time the need for additional power sources to quench both an industrial and domestic demand for electricity was purely an economic and not and environmental (carbon reduction) factor. This hydro scheme was instigated by "the Government of the day" as a bold move and was the major force of the World War II refugee and "technical" workforce inclusion of skilled and unskilled migration into the Australian environment. Although this mass "invasion" of workers with families was thought of in some circles as intrusive, the expansion of population post war years and its integration into the Australian rural sector, produced the multi- lingual multi-cultural diversity of later years.This General Purpose Multimeter is an analogue meter i.e. it has a needle arm that moves across a scale of divisions. This is a large(hand held) device due to the mechanical movement system within and the large size of its electronic components of its circuitry.There are two black bake-lite push buttons operating the wire inserts Positive/negative leads at the top. The meter (protected with a glass window) has clearly marked graduations (top - volts, bottom amperes). Below this are two bake-lite dials (left "potentiometer the right one measuring range selector). Below this is a "dial" switch to input the desired resistance measuring range "V" Front "H&B ELIMA" and to the right Elavi 15n. 0n the front side is a label "STATE ELECTRICITY COMMISSION OF VICTORIA TRANSMISSION DEPT E.C.No." On the bottom of the base is a stenciled layout of the battery "layout" including the fuse . The information notice is presented in five languages starting with German, English,French, Italian, Spanish and Dutchsec vic kiewa hydro scheme, alternate energy supplies, alpine population growth

This case is for a testing voltmeter recorder. The last time it was certified by SEC Vic laboratories on the 17/4/77. It was used extensively in the transportation of the mobile recorder which was sometimes placed for periods of one month at locations experiencing unacceptable fluctuations of power. These locations would cover the North East regions of Victoria. They cover voltage drops at domestic and business properties especially those that were experiencing regular fluctuations(daily) at approximately the same time of the day. As the electrical network is required to operate within a set level of voltage, fluctuations outside of this has to be investigated and necessary remedial action taken. This is especially so for rural properties where power "drainage" can occur through animal/bird and tree interference. See KVHS 0302 (A) for the instrument.This case for a mobile voltage recorder is very significant to the Kiewa Valley because it highlights the difficulties that can occur in maintaining a power supply that experiences fluctuating power demands by the rural industries that it supplies. The requirement of a mobile testing apparatus to cover the various sections in the Kiewa Valley and other rural areas in the northeast region is one of necessity as electricity once connected to a rural property is a labour saving supply as generators on rural properties require a higher degree of maintenance an ultimately at a higher cost. The testing of the SEC Vic supplied electricity to rural properties,those who had previously run on generators, had to be quick and unassuming with certainty of correct supply levels.This heavy and thick all leather case for the "easy" transportation of the Volt meter recorder has a opening top which pop riveted to the main body(rivets are aluminium). The all leather top has a shaped carrying handle which is also riveted on. There are two straps on the side of the top which can be fastened to the main body by metal "shoe" buckles. The bottom end is secured to the main bag by large rivets.Tick grade stitching is on all corners.Nilsec vic kiewa hydro scheme, alternate energy supplies, alpine growth in electricity consumption

During the 1890s the Ballarat School of Mines started teaching photography.Handwritten invoice on printed letterhead. The invoice was for chemicals and apparatus for the Ballarat School of Mines, including items for the Chemical Laboratory, Photography Laboratory, Electrical Laboratory and Cyanide.walter cornell, ballarat school of mines, laboratory, chemist, pharmacy, photography electricity, photographic equipment

The school bell has been used in various forms for several centuries. In Australia and the UK it was often a hand bell, located on the teacher's desk in a small school. In larger schools it was positioned in a central area, and one bell was used to signal to all classrooms. In North America it was more usual to find a large bell on a stand located in a central area of the school where it could be heard by everyone throughout the premises. More recently, the school bell has become wall located, and electrically activated, using a mechanical timing apparatus. Now the same bell is computer programmed and activated, although there are many older bells still in operation. The school bell was rung at the beginning at the school day, often to summon students to the morning assembly in larger schools. It was then rung throughout the day to signal the start and end of specific lesson periods, the beginning and end of school morning and afternoon breaks, the lunch period, and the end of the school day, no doubt eagerly awaited by many students! The school bell was used as a timing device in schools to signal the start and end of specific activities.Bell brass with heavy metal square shaped base and wooden handle-hand held, Kel(?)her Melbourne on the topInscribed on the metal at the top of the bell are the letters "Kel(?)her Melbourne" flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, bell, school, lessons

The Ballarat School of Mines Annual Report 1891. Annual Report, Crown Grant, Affiliation Statute, Constitution, Examination Statutes, Associateship of The School, Certificates Granted by the Council, Clunes Branch Report, Departmental Expenditure, Fees, Form of Bequest, Gauge-Testing Apparatus, General Balance Sheet and Liabilities and Assets, Honorary Correspondents, Life Governors, Meteorological Observations, Number of Students attended The School of Mines, Office Bearers, Practical Treatment of Ores, Report of the Professor of Mineralogy and Geology and Curator of the Museum, Report of the Superintendent of Laboratories, Report of the Lecturer on Engineering and Surveying, Report of the Lecturer on Mathematics, Report of the Lecturer on Electrical Engineering and Telegraphy, Report of the Lecturer on Botany, Report of the Lecturer on Geometrical and Freehand Drawing, Report of the Lecturer on Materia Medica and Physiology, Report of University Classes, Report on Mining Laboratory, Examinations Held, Scale of Charges for Assays and Analyses, Statement of Receipts and Expenditure for the year 1891 and Special Trust Funds, Statistics - Students attending Lectures, Subjects and Lecturers, Subjects and Examiners, Subscriptions and Donations from 1st January to 31st December 1891, Syllabus of Lecture CoursesThe Ballarat School of Mines Industries and Science Annual Report, 1891. Cover is browning around the edges, front cover has small tear on bottom of cover, 132 pages. ballarat school of mines, annual report, andrew anderson j.p. - president, f. j. martell - vice president, r. denham pinnock - vice president, rivett henry bland - trustee, the hon. sir w. j. clarke - trustee, the hon. john warrington rogers - trustee, james oddie - trustee, the hon. henry cuthbert - honorary solicitor, c. eyres - honorary treasurer, charles kent - auditor, andrew berry - registrar, f. m. krause - professor of mineralogy and geology, and curator of the museum, alf. mica. smith - chemistry, metallurgy, natural philosophy, f. m. krause - geology, mineralogy, geological surveying, j. h. horwood - lecturer on engineering and surveying, h. j. hall - lecturer free-hand and model drawing, george day - botany, j. f. usher - materia medica and physiology, c. w. wilson - university classes, isaac jaques jones j.p., mr e. wattis - manager, mining laboratory, j. a. dawson - electrical engineering and telegraphy, elder gray, harry e. sando, charles matthews - auditor, j. h. daley - auditor, henry crone - assistant registrar of titles, henry b. loch, isaac jacques jones, charles eyres, j.a, j.a. dawson, statistics, university classes, bella guerin, c.w. wilson, clunes branch of the ballarat school of mines, w.e. burbridge, h.j. hall, museum, state school students, daniel walker, a.j. higgins, state school science classes

A.C. Bridge MK 7A. A black instrument panel with controls, connectors and a 0-5- microAmpere DC indicator located on thetop face, and the electrical components located on the underside. No mounting frames, hence components exposed and vulnerable. scientific instrument, barlow and kelly, a.c. bridge

A telegraph or Morse key, sends a series of electrical signals down a telegraph line or via radio frequencies; the signals are interpreted as Morse code, a binary form of language constructed of 'dots and dashes', combinations of which correspond to letters of the alphabet. The motion of the key acts to complete an electrical circuit between the sender and receiver, producing a short pulse 'dot' or longer 'dash,' the space between the code indicates a broken current or wave.Device used to transmit telegraphic messages in Morse code through the manipulation of electric signals. The metal 'key' sits in a central bracket on which it moves up and down aided by a spring, controlled by an operator pushing the black Bakelite knob on the protruding end of the device. The motion presses the key onto a circular metal disc, completing the circuit and sending an electrical pulse to the receiver. The apparatus is secured to a wooden base with wires attached to the terminals; a cut out section of the base suggests wires may have entered through this area, attaching to a battery.Printed ink on base: "PMG"telegraph, telegraphist, morse code, mechanisation

Book published by G D Peters & Co. of Caxton House Westminster London detailing the National Pneumatic door control systems. Provides an introduction, system types, door engines, folding door and step equipment, treadle plates, electrical and pneumatic fittings and location advice. This type of equipment was used on Melbourne tram and buses. Has the stamp of the Melbourne agents - Railways & Rolling Stock Equipment Ltd. throughout.Yields information about the pneumatic door control systems of G D Peters.Book - green paper covers containing approx 90 pages detailing the equipment offered with some coloured diagrams. Pages secured by two metal clips.tramways, tramcars, g d peters, electro pneumatic, door controls, buses