Cambridge Instrument Co Ltd, England operated from 1924 to 1967. They were makers of measuring instruments (electrical) and scientific instruments.Timber framed electrical instrument with interior metal conductor. Brass knobs that screw are at one end labelled 1.5 volts and 15 amps. Plates each end labelledscientific instrument, cambridge instruments, electricity, scientific objects, scientific instruments

A.C. Voltmeter, 150-600 volts non liner, semicircular scale ventilation holes. One termnal post on each side panel. Maker's name plate on top face below scale windo. Adjacent: spring-loaded contact button. Model 155. Serial Number 42339scientific instrument, ballarat school of mines, weston electrical instrument co

In 1993 this items was held in the Mt Helen Physics Department Optic Laboratory.Wattmeter type PWG, Range 0-1.5 kw, semi-circular scale. Three volt ranges: 150v, 300v, 600v. 50 Hz. In varnished wooden carry case, with hinged lid and leather carry strao. Calibration chart inside lid. Serial Number 2973scientific instrument, wattmeter, electrical engineering, laboratory, electrical instrument, a j william, mount helen campus, physics department, optic laboratory, a.j. william

D.C. Volt ratio box. 100 OHMS per volt. Black terminal post pane;, inside a polished box with hinged lid and leather carry handle. Serial Number: 3021scientific instrument, volt ratio box, physics, laboratory, electrical instrument, electrical engineering

Originally used in the Electrical Engineering Department at the Ballarat College of Advanced Education.Light coloured wood box with hinged lid. Metal brackets for carrying handle strap - missing. Inside, wooden section with sliding knob. This is the sliding contact for metal bars underneath.Diagram on blue paper attache to inside of lid. Stencilled on front "P1 4". On DYMO tape of side of box "USE WITH FREQ METER". Aluminium sticker on lid - "BALLARAT C.A.E." Scratched beneath this "ELEC / ENG DPT" electrical engineering, ballarat college of advanced education, electrical instrument, sliding resistance, scientific instruments

Milliammeter in wooden case, with leather range 100-500ma. Semi-circular scale with mirror-backed pointer.Model 155m Serial Number 38783scientific instrument, ballarat school of mines

Would have been used by staff and students of electrical Engineering at the School of Mines, Lydiard St. campus up until the start of the Mount Helen campus E building third floor. The meter would have had limited use in classes until 2009. This Wattmeter became part of the historical collection in 2011 after the movement of Engineering out of the E building. In working condition and a good example of early 20th century electrical instruments.A polished natural timber case with partial flip top lid and leather carry handle, housing a single phase AC Wattmeter, rated at 170 volts , 30 amps Scale 0 to 5 kilowatt. Serial no :210088Schematic diagram on inside lid showing how to connect the Wattmeter to measure a 3 phase balanced load. Paper sticker on top "1/92" Information for voltage and current ranges painted with white paint on left hand side by Voltage terminals Voltage terminals labelled A and N Also white on black "W8" on same surface Aluminium plate "67" on right hand side near current terminals which are engraved To A and Ti A to indicate current flow direction Aluminium sticker with Ballarat CAE Electrical Engineering by carry handleeverett instruments, single phase, wattmeter, electrical, scientific instruments

Used for electrical experimentsBlack metal cage with curved mesh top. Three rows of ceramic resisters supporting wire elements. Two red terminals at one end. Red label - 30 OHMS, 4A A MAX on endMetal plate on top - "Leitz - Wetzlar 230 volts 7 amp"load resister, electrical, volts, ceramic resisters, wire elements, leitz-wetzlar, amperes, omhs

The Universal Acoustic Coupler was made and would have been used to connect a telephone to dial a computer remotely. The control panel is under the wooden flap. There is a power switch, full duplex switch, 500 Ma Fuse, CCITT Port. When not in use it can be folded up into a small timber carry case with handle.Wooden box with two sections that open. Top section hinged and folds back. inside are controls and cables for connecting to a computer. Instructions for use are on the lid. Front section has clips and folds down to a phone to placed in "speakers". English maker's plate and Melbourne supplier's plate with A.P.O. Permit No. C74/8/903 Serial No. 775326 moore reed, universal acoustic coupler, telephone, remote connection, computer connection

This is a three phase meter meaning it may have been used at the Ballarat School of Mines or a commercial building. Homes are only one phase meters. It would have been attached to the wall - possibly within a box. The rods on the bottom would be the securing points - these are removable.Black base on 6 long screw in rods - removable. These used to attach meter to wall or box. Glass sides (longer sides missing) Three phase watt-hour meterBlack plate on front with full details and makers information.three phase meter, polyphase meter, metropolitan vickers, united kingdom, commercial use, screw-in rods

Used at Ballarat School of Mines Building Studies, Yuille Street, Ballarat. This probably in the 1960s. It was sourced from David Flintoff. Steel cased electric motor, two wooden handles, power cord and spannerUpper Plate: STANLEY ELECTRIC TOOLS; Type H39; Model B; Serial No. CT 4887 Lower Plate: STANLEY H-13-B; US Pat. - 2562143stanley router, electric router, ballarat school of mines, building studies, david flintoff

Used in Building Studies at Ballarat School of Mines. The sander used to sand rough timber smooth, remove old finish from wood, put a bevel on a door, reduce the thickness of timber, dress up a poor saw cut. Also used for back cutting miter cuts for neater joints and for polishing and cutting.Stainless steel with rollers and sanding plate. Hand held. Continuous loop of sandpaper would be mounted.Maker's Plate: MILLER FALL TOOLS CATALOG 830 3 INCH BELT SANDER MODEM "C" USE 3" X 21" BELT 230/250 VOLTS 3 AMPS 25-60 CYCLES MADE IN USA PATENT 2,991,595 MILLER FALLS COMPANY, GREEFIELDS, MASS. TO CHANGE BELT PULL LEVER DIRECTION OF BELT ballarat school of mines, building studies, david flintoff, timber, smooth, miter cuts, polishing, buffing, thinning

Two wire covered elements in steel mesh, oblong case with handle. Screws at each end undo to allow access to inside of cageMaker's plate: "Made by A.H.GRACE, Sydney Prim volts - 240 Sec volts - 116 Watts 600heat source, wire cage, electrical, coils