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2432 - Map-Measure with Magnetic Needle Sakurai, Tokyo, |
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2434 - Cambridge Portable Potentiometer Cambridge Instrument Company Ltd, England |
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2435 - Electrostatic Voltmeter 5kV Max Kohl A.G., Chemnitz, Germany |
|
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2435 - Electrostatic Voltmeter 5kV Max Kohl A.G., Chemnitz, Germany |
|
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Oertling, London, England |
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2437 - Demonstration Hydraulic Lift Griffin, London, England |
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Unknown, |
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Edison, |
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2439 - Variac. Adjustable Transformer Type 100-R Warburton-Franki, Brisbane, Australia |
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2440 - Edison Fireside Phonograph, Combination Type Thomas A Edison et als, Orange NJ, Usa |
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Kingsley Radio, Sydney, Australia |
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2442 - Microwave Directional Coupler Siemens, Germany |
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2443 - All Transistor Radio, Kriesler 41-26 Kriesler A/asia Pty Limited, Australia six transistors, one diode OC170 Converter OC169 IF Amp (2 of) OA80 Detector OC75 AF Amp OC74 (2 of) Push-Pull AF Output |
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Universal, Brisbane, Australia The drive shaft has a rubber cone, with plastic disk backing. This motor was used to run gyroscopes up to speed in lecture demonstrations. |
|
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2445 - Macintosh Powerbook 100 Computer Apple, Usa |
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Foreign, |
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Unknown, Usa |
|
2448 - Synchronous Motor and Gearbox Telechron, General Electric, Usa |
|
 |
Unknown, |
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2450 - Lamps, Projector and Lighting Various, |
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Silcon, Hong Kong, Other |
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2452 - Mechanical Clock Movement Kienzle, Germany Early electrically wound striking clock movement in poor condition. |
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Casella, London, England |
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2454 - Transmitting Valve QBL 3.5/2000 Philips, Holland |
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Simplex, Communication Systems of Australia P/L, Australia |
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Unknown, |
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Various, 33 items of metal, mineral, plastic, glass, alloy, ceramic. used by Dr Heckenberg in instrument design classes. |
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2457 - SAFTPAK Isolation Transformer Gaythorne Radio (Gayrad), Australia |
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2458 - Apparatus, Unknown Purpose Unknown, Usa |
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2459 - Norden M9 Bombsight (2) Victor Adding Machine Co., Usa |
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Unknown, |
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Societe Anonyme de Telecommunications, France Metal Dewar flask, embedded HgTe - Cd Te diode detector Cooled to liquid N2 temperature Doped Ge window, passband 4-14 um Used to detect rapid (MHz) variations in CO2 lasers. |
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Toshiba Heating Appliances Co Ltd, Japan |
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|
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Small motor used to drive rotational mechanics lecture demonstrations. |
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A. J. William, Melbourne, Australia |
|
Various outside Australia, |
|
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Weston Electrical Instrument Co, |
|
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Carl Zeiss, Jena., Germany Instruments, such as this one, were widely used for concentration measurements in medical applications. Two light beams pass through envettes (missing), containing liquids of interest, and are brought to comparison by an observer, through a system... |
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2469 - AC Range Box for Unipivot Meter Cambridge Instrument Co Pty Ltd, England |
|
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Unknown, The microscope is mounted on top of the box that it is stored in. It would have been used in the field, possibly for examining flora, geological specimens and pond water. |
|
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Unknown, Germany |
|
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2472 - Valve Rectifier 12G-K17 Matsuda (Mazda), Japan This is a half-wave high-voltage rectifier, used as a damper diode in B/W TV receivers, in the EHT section. |
|
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Ayrton Saunders & Co. Ltd., Liverpool, England This is an atomiser. The bulb is squeezed, and sprays a fine mist into the operator's mouth. When the bulb is squeezed, it blows a high speed jet of air across the tip of a venturi tube. The reduced pressure raises liquid up the venturi from... |
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Hamblin, London, England The operator views through a peephole in the upper thumbwheel. Rotation of the thumbwheel selects lenses of different powers. Illumination from a battery-powered filament, is reflected into the eye through a 45 degree mirror, which has a peephole... |
|
|
2475 - Nuclear Warfare Pamphlet Director Civil Defence NSW, Hoseholders' Handbook for Nuclear Warfare |
|
|
Kingsley Radio, Sydney, Australia |
|
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Carter Tools, Australia, This instrument was used on NSW railways but its exact application is unknown. If a cylindrical object is placed between its jaws and the central slider is brought up to touch it, the scale reads directly the diameter. Simple trigonometry (left as... |
|
 |
2477 - Post Office Wheatstone Bridge T.E.P.L. Melbourne, Australia (1941) |
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Master Instruments Pty Ltd, Sydney, Australia |
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2481 - Laboratory Resistor 10K ohms Philip Harris & Co. Ltd Birmingham, England |
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unknown, |
 |
2480 - Fifty Cycle Inverter Model VR58FF Van Ruyter, |
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2482 - ATM High-Speed Relay 414 unknown, (c. 1900 (?)) Telegraph relay. Rocking armature with contacts either side of leaf. |
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2483 - Weston Current Transformer Model 539 Weston Electrical Instruments Corp., Newark, N.J., Usa |
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2484 - Fowlers Extra Long Scale Slide Rule Fowlers (Calculators) Ltd, Sale, England (1948) Calculator design celebrates 50 years from founding of the company by William Henry Fowler (1898) Long scale (equivalent to 79 in long rule) allows 4 decimal places or better. |
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unknown, 5 inch DE243- 91215- 16E1 CJ 8 inch SIDMSE- 17D64- 16B2 |
|
unknown, Small wafer unprocessed, two larger wafers have multiple chips printed on them. |
|
 |
2486 - Weston DC/AC Milliammeter Model 370 Weston Electrical Instrument Corp., Usa Wooden box, steel and copper. 75, 150 mA FSD Selection by series or parallel connection of coils in electrodynamometer movement and relevant terminals |
 |
2487 - AWA Carphone Volt Power Unit Amalgamated Wireless Australia, Australia Power supply for mobile two-way radio as used in taxis. Transistor inverter circuit for high voltage for valve transceiver. Uses 2N277 germanium power transistors. |
 |
2488 - Weston AC Voltmeter Model 433 Weston Electrical Instruments Corp., Newark, N.J., Usa (1940s) Bakelite, steel, copper. Scales 0-150, 0-300, 0-450V Moving iron movement |
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Osram B.V.A., England (c. 1930) These radio receiver valves have glass tubes sheathed in ventilated steel cages. 1. Unknown with B7 base 2. VMS4CP with B5 base 3. MS4R with B5 base |
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2490 - Sine and Square Wave Generator Model 112 B.W.D. Electronics P/L, Australia Australian made signal generator Sine or Square Wave output 200 c/s to 1 Mc/s Step attenuator and level control allow output level to be adjusted 0-20mV to 0-20V output. |
 |
2491 - Planar Triode Valve JAN 6299 G E Co, Usa (1984) Ceramic and gold plated metal, coxial structure troide for mounting in coaxial cavities. The electrodes are closely spaced to reduce electron transit time. Operates in low GHz range in grounded grid configuration |
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Carl Zeiss, Jena, Germany Low power microscope for examination of tissue samples. |
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2493 - High Voltage Selenium Rectifier Siemens, At least 200 cells in series, with a centre tap. The frame is plastic with springs and pellets at each end to maintain contact pressure on the cells. |
 |
Arie Bergs, Germany Silicone rubber servicing aid. |
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Philip Harris Ltd Birmingham, England Steel and brass. A spherometer is used to indirectly determine the radius of curvature of a spherical surface by measuring the difference in height between the tip of the central screw and the three outer legs and making a simple calculation. |
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unknown, A dial gauge used to measure the power in dioptres (inverse radius of curvature in m) of a lens surface. |
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CAPT, Switzerland Stop watch used in undergraduate teaching labs. Knob at top used for winding. Pressing it starts, stops and resets the hands. Outer dial reads to 30s with inner dial counting to 15 minutes. |
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2500 - Amplifier and Null Detector Type 1231B General Radio Co., Cambridge, Mass., Usa Audio frequency null detector or output meter. A two-stage linear amplifier drives the null detector. A 1D8GT valve is used in the null bridge circuit. A third amplifier stage may be added to provide a logarithmic output to the meter. Sensitivity... |
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unknown, Appears to be parts for a water-cooled dummy load. A resistor, carbon film on ceramic tube, is held between two circular sets of finger stock. Water flows through and around the resistor. Although such a resistor with air colloing would only be... |
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Griffin & Tatlock, London, England Standard beam balance for student laboratory use up to 250 gm. A rider on the left arm can measure to one milligram. Transcription of handwritten instructions. BEAM BALANCE Operation: 1. Check that the balance is level - adjust left and right... |
 |
2504 - Bakelite Tablegram 11-25 Kriesler, Sydney, Australia (c. 1950) Dual wave (AM medium wave and shortwave) valve wireless receiver with 78 RPM record player on top. 240 V mains powered. The chassis uses a mix of octal and 9-pin miniature valves. Kriesler radios are considered by collectors to be among the best... |
 |
2505 - Magnetic Flux Density Reference 1.39 kG Scientifica and Cook Electronics, London, England Cased permanent magnet used for callibration of Hall Effect magnetometer from the same manufacturer. |
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