What device converts AC to DC? rectifier A rectifier is an electrical device that converts alternating current (AC), which periodically reverses direction, to direct current (DC), which flows in only one direction. The process is known as rectification, since it "straightens" the direction of current. The unit was used at Ballarat School of Mines in the Maths, Science and Physics Departments.Grey metal unit with Dials on the front and vents at the back. Handle for carrying. Two switches for turning on and off. Yellow sticker - SMB - with number 116071. Engraved on back - S.M.B.. Maths / Science / Physics Sticker on cord indicating inspection of unit - 13/04/2005. Tag Number - 032735alternating current, direct current, ac, dc, rectifier, electrical, ballarat school of mines, science, maths, physics

Used to record the start/finish times and days of work by its employees. A card with a unique employee identifier was inserted in the machine by the employee at the start and end of a shirt and the information was sent to the human resources/pay section to allow the updating of staff records and pays. This example was in in use at the Victorian Civil Ambulance Service from at leats the early 1960s (source Chas Martin AHSV curator 17 October 2016).Grey metal box. Clock face set in centre and slit in bottom. Cut power cord at back.Clock on and off

Book - 170 pages, 10 sections sewn and bound into heavy green card covers cloth covered with glued end pages. Title "Miscellaneous Tests on Car Equipment" for electric street car or trams written by Eugene C Parham and John C Shedd, published by McGraw Hill Book Co. of New York, dated 1910. Has a table of contents, index at the rear, and index of Rules for determining sizes of electrical equipment and tramcar horsepower and kilowatts, traction and speeds. Cover sheets, table of contents and indexes scanned to a pdf file.In a number of places "The Electric Supply Company of Victoria Limited" stamped throughout the book.trams, tramways, electrical engineering, electrical equipment, tramcars, maintenance, motors

In the early 1970s the rope tows at Falls Creek were replaced by T Bars, after which they were replaced by chairlifts. When the snow thawed, the mountains reverberated from the sounds of blasting as new pylons were constructed for these chairlifts.Blasting equipment from the early 1970s in three parts, including a rectangle metal box with black with white text on top and six connectors, a rectangle yellow 'Blostometer 80' and a rectangle box with red knobs at end and enclosed in a black-brown leather case. 'EXPLODER TESTING RHEOSTAT' 'Blastometer 80' 'Nissan Blasting Machine - ICI - 30 shot condenser'falls creek, construction, blasting, explosives, snow, snow fields

This is a set of six photographs of stereoscopic equipment and personnel at the Army Survey Regiment, Fortuna, Bendigo, c1950s to c1960s. The stereoscopes shown in photos .1P and .2P were used to stereoscopically view and interpret features in overlapping aerial photographs. The stereoscopic plotters shown in photos .3P and .4P were used to stereoscopically plot topographic detail from overlapping aerial photographs using a pantograph arm with pencil onto a controlled plotting sheet. The Ryker Model PL-3 Wernstedt-Mahan type stereoscopic plotter shown in photos .5P and .6P was used for precision contouring, planimetry and profiling. It was a comparatively simple stereoscopic mapping instrument designed to use ordinary contact prints of aerial photographs. It provides for plotting on a constant scale and approximate tilt correction but does not provide refinements such as correction for lens distortion. The plotter in Photo .6P does not have its pantograph arm attached. These plotters pre-date the Wild B9 and B8 stereo plotters introduced in the 1960s.This is a set of six photographs of stereoscopic equipment and personnel at the Army Survey Regiment, Fortuna, Bendigo, c1950s to c1960s. Black and white photos are on photographic paper and were scanned at 300 dpi. .1) - Photo, black & white, c1950s to c1960s, Universal Stereoscope, unidentified technician. .2) - Photo, black & white, c1950s to c1960s, Old Delft Scanning Stereoscopes, unidentified technicians. .3) - Photo, black & white, c1950s to c1960s, Unidentified stereoscopic plotters and technicians. .4) - Photo, black & white, c1950s to c1960s, Unidentified stereoscopic plotter, CPL Bill Shapcott. .5) and .6) - Photo, black & white, c1950s to c1960s, Ryker Model PL-3 stereoscopic plotter.Photo .4P is annotated on back - ‘Bill Shapcott (CPL)’royal australian survey corps, army svy regt, rasvy, army survey regiment, fortuna, asr, air survey, photogrammetry

Book - 32 pages centre stapled titled "1978 Edition - The Australian Tramway and Motor Omnibus Employees Association (Victorian Branch) - Safety, First Aid, Hand tools and protective clothing and equipment". Provides information and guidance on Industrial safety, equipment and fire. Has adverts for The Druids, Holdens, ANSI, Hibernian Society, Thomas Warburton, Wonderpak Chemicals, Fairmark, Commonwealth Engineer, Raff Jeanery, Australian Thread, Regent Motors, Yarra Falls Ltd, Fabspec, Silverway Pharmacy, Consolidated Pneumatic, Sands and McDougall, McAdams of Essendon, the Irish National Foresters Catholic Benefit Society and Tramways Benefit Society.trams, tramways, unions, safety, medical, benefit society, workshops

Instruction - 64 pages + light brown card cover centre stapled with cloth binding on outer edge + fold out drawing inside the rear cover, titled "Westinghouse - T5001-1 SM3 Straight-Air Brake Equipment". Dated March 1927. Has a table of contents, outlines the rules of operating brake equipment fitted to tramcars, the SM3 and PV brake valves, SX2 brake valve, locomotive straight air, installation piping, wiring, maintenance - piston travel, lubrication, car tests, hints to Motormen and Conductors and General Hints. Includes instructions on compressors, air intakes, valves, cylinders and governors.On inside cover "Bob Prentice 13 High Street Prahran Vic 3181" and on top of first page "W. Armstrong"trams, tramways, electrical engineering, electrical equipment, westinghouse, air compressors, brakes, instructions, maintenance

Watermarc members earned $10,000 in gym equipment for Montmorency Secondary College in the Let's Move for a Better World Challenge.News clipping, black text.watermarc, montmorency secondary college, let's move for a better world challenge

Receipts (2), hand-written in red on yellow sheets, for 25 items of military equipment returned to the Quart Master's store by Private N E Swainston of 10 IRC (Independent Rifle Company) JTC (Jungle Training Centre). List constitutes complete kit of training soldier.national service - australia, training, swainston collection

Instruction - 108 pages + 9 fold out drawings glued and stapled in at the rear + card covers with red cloth binding, rounded right hand edges, centre stapled. Titled "Instruction Pamphlet S-100, Air Brake and Safety Car Control Equipment", published July 1924 by the Safety Car Devices Co. St Louis. Includes the M28 Brake valve. Describes in detail the rules for operation, parts, description, M28 Brake Valves, Maintenance, Practical car tests, hints, defects. The 9 drawings at the rear of the document give detail arrangements of the piping and control equipment. Book scanned into three sections. See also Reg Item 3513 for another similar document.on top of first page "C. Hodgson"trams, tramways, electrical engineering, electrical equipment, air compressors, brakes, instructions, maintenance, controllers

Photocopy of a four page document, onto two A3 sheets, titled "Tramway Construction and Equipment", produced by Duncan and Fraser, c1887 as it notes Ballarat's horse tramways . Promotion document detailing Duncan and Fraser's premises, Adelaide, track, economics, horse tramcars, depots, horses, rails, sleepers and tram route.trams, tramways, horse trams, adelaide, duncan fraser, ballarat

In the early 1990s, the Bulla Primary School received funding for the school to purchase and install new playground and gym equipment for the children. The climbing tyres were one of the purchases.A coloured photograph of 8 rubber tyres fixed to a wooden frame.playground equipment, bulla primary school

This collection of 34 photos of Lithographic Squadron personnel and equipment was taken in at the Army Survey Regiment, Fortuna, Bendigo, in 1992. The photos were mainly taken in the Camera, Contacting, Printing, BARCRO and Production Control work areas, as well as outside Fortuna’s buildings. Although these photos are not annotated most personnel are positively identified. This is a set of 34 photographs of Lithographic Squadron personnel and equipment at the Army Survey Regiment, Fortuna, Bendigo, 1992. Photographs .1P to .32P are on 35mm negative film and scanned at 96 dpi. Colour photos .33P and .34P are on photographic paper and scanned at 300 dpi. They are part of the Army Survey Regiment’s Collection. .1) - Photo, black & white, 1992, back row L to R: Andrew Arman, unidentified Mark McCulloch, Dale Hudson, front row L to R: Daryl South, unidentified (x2). Janet Murray, LT Dave Weston. .2) - Photo, black & white, 1992, back row L to R: unidentified, CPL Paul Baker, Shona Hastie, front row L to R: LT Craig Hersant, Darren Maher, Chad Hardwick, Rob Jones. .3) - Photo, black & white, 1992, WO2 Steve Egan. .4) - Photo, black & white, 1992, LT Craig Hersant. .5)- Photo, black & white, 1992, CPL Warren Shirley, Jeff Willey, Gary Kerr. .6) - Photo, black & white, 1992, L to R: CPL Penny Knott, Janet Murray, Shona Hastie. .7) - Photo, black & white, 1992, L to R: MAJ Terry Edwards, LT David Weston. .8) - Photo, black & white, 1992, Frank Lenane, WO1 Trevor Osborne. .9) - Photo, black & white, 1992, L to R: WO2 Rob Bogumil, WO2 Steve Egan. .10) - Photo, black & white, 1992, back row L to R: Terry Winzar, Roy Hicks Marty Stradbrook, Janet Murray, Nick Vanderzwan, Mark Bird, front row L to R: SGT Dale Hudson, SSGT Russ Mollenhauer, Ross Anza, SGT Kim Reynolds, SGT Stuart Ridge, WO2 Jeff Willey, Peter Hamilton, Garry Lord, Gavin McLean, unidentified. .11) - Photo, black & white, 1992, Janet Murray, Mick Muzeen. .12) and .13) - Photo, black & white, 1992, Janet Murray. .14) to.16) - Photo, black & white, 1992, SPR Scott Cameron, CPL Warren Shirley. .17) - Photo, black & white, 1992, L to R: SPR Shane Campbell, SGT Brian Paul. .18) - Photo, black & white, 1992, LCPL John Bragg. .19) - Photo, black & white, 1992, SPR Allison (Ottaway) Wooldrage. .20) - Photo, black & white, 1992, map inspection station, LT Colin Davidson. .21) - Photo, black & white, 1992, map inspection station. .22) - Photo, black & white, 1992, map inspection station, LT Colin Davidson. .23) and .24) - Photo, black & white, 1992, map inspection station, SPR Nicole Midgley. .25) - Photo, black & white, 1992, map inspection station. .26) - Photo, black & white, 1992, map inspection station, unidentified. .27) - Photo, black & white, 1992, CPL Penny Knott. .28) - Photo, black & white, 1992, CPL Ken Peters. .29) - Photo, black & white, 1992, WO2 Rob Bogumil. .30) - Photo, black & white, 1992, L to R: WO2 Peter Imeson, WO2 Rob Bogumil. .31) and .32) - Photo, black & white, 1992, L to R: SGT Brian Fauth. .33) - Photo, colour, 1992, Klimch Camera, CPL Damien Cole. .34) - Photo, colour, 1992, Speedmaster Printing Press, L to R: SGT Gary Kerr, unidentified, SGT Kim Reynolds, SPR Shane Campbell.No personnel are identified.royal australian survey corps, rasvy, army survey regiment, army svy regt, fortuna, asr, litho

Digital TIFF file Scan of 35mm Ilford FP3 black and white negative transparencygeorge coop collection, ararat locomotive shed, j-class steam locomotive (vulcan foundry), valve gear

Digital TIFF file Scan of 35mm Ilford FP3 black and white negative transparencygeorge coop collection, ararat locomotive shed, j-class steam locomotive (vulcan foundry), valve gear

A report on the opening of Jets Studios in BundooraNewspaper clipping, black and white text and image.jets studios, music studios

Banyule Council staff participated in the Around the Bay fundraiser.News clipping, black text and colour image.banyule city council, around the bay, bicycle network

Hard covered book with leather spine and corners. Image of a piston in gold on the front. 231 pages with 29 woodcuts and 72 plates of engineering drawings. Bookplate in front cover - No 126 in the Ballarat School of Mines Library, presented by the London Honorary Correspondent in 1876.ballarat school of mines library, engineering, link-morton, expansion gear, library book no. 126

Field gear and inert weapons and ordnance have long been popular items with militaria collectorsvietnam (democratic republic). qua^n do ^i -- weapons systems, vietnam (democratic republic). qua^n do ^i -- uniforms