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837 - Infrared Image Conversion Viewer Photon View, |
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This round-bottomed glass flask is double-walled, evacuated between the walls ( there is a closed-off exhaust tip at the base of the flask) and the inner surfaces of the walls silvered. Consequently, heat losses are very low, and this flask was... |
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846 - Crookes' Maltese Cross Tube Unknown, England The Maltese Cross Tube, created by William Crookes, demonstrates the flow of electrons in an evacuated vessel, under the influence of a high voltage . The electrons travel in straight lines if no other influence exists, are stopped by the metal... |
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The glass envelope contains a poor quality vacuum, hence there is residual gas heated by incident radiation. The metal vane surfaces are heated by radiation and interact with the gas imparting motion to the vanes. The vanes are NOT driven by... |
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884 - Lead-Acid Battery Cell Tester Master Instruments Pty Ltd, Australia This is an obsolete instrument, once used to measure the voltage of a lead-acid cell under load. The prongs were applied to a cell of a vehicle battery, and the resistor across the prongs simulated the current load of an electric starter... |
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Aegis Manufacturing Company Pty Ltd, |
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Royal Ediswan, England |
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922 - Vacuum Thermocouple 50 mA Cambridge Instrument Co., England |
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Thomas Walker & Son Ltd, England |
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Bradley, |
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Sprengnether Instruments, |
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1014 - Pressure Cell Attachment Amsler, |
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1049 - RF plugs, attenuators and adaptors General Radio, Usa |
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Budenberg Gauge Co. Ltd, |
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1072 - Vibro-meg Megger Portable Tester Paton Electrical Pty Ltd, Sydney, Australia This is an Australian version of the Megger designed by Evershed & Vignoles. It is battery operated. It has a mechanical vibrator and transformer to generate a DC high voltage. It tests equipment, motors and electric cables for continuity... |
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1209 - Solid State Detectors for Ionizing Radiation Simtec, |
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1252 - Electrostatic Prime Conductor Griffin, England |
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1267 - Compucorp 342 Statistician Calculator Compucorp, |
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1269 - Variable Resistor 5 A, 137 ohm W.G. Pye, Cambridge, England |
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Venner Time Switches, |
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1279 - Circuit Boards from 1960s Texas Instruments, Usa |
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| This instrument has a window at one end to allow in radiation, mainly beta (electrons), and an eyepiece at the other end. The electrons charge a metal fibre inside the instrument. The fibre deflects proportionally to the charge, and... | |
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1292 - Demonstration Moving Iron (2) and Moving Coil (1) Meters |
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1307 - Image Orthicon Tube 9564 EMI, England |
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1325 - Weston Normal Cell No L-375449 Cambridge Instrument Co., London, |
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1373 - Electro-optic Modulator Coherent, |
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Pintsch, Germany, Germany A barreter is a nonlinear resistance that relies on the increase of resistance of a wire when it is heated to act as a current limiter. |
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489 - Valve, Power Pentode 6DQ5 General Electric, Usa (ca 1960) Horizontal Sweep Tube for Black and White TV Receivers. |
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RCA, Usa |
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RCA, Usa (ca 1940) UHF Diode used in WW II radio equipment. |
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Unknown, England Regulator valve, maintains constant 85V to attached circuits. |
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AWA, Australia (ca 1942) Thermocouple used in WWII radios to indicate antenna current flowing. |
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Salter, Three spring 'balances' made by Salter 1) 100 gm letter balance 2) 4 lb produce balance 3) 250 gm scientific spring balance |
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UQ Mechanical Engineering Department, |
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1398 - Conductivity Bridge Type MC1 Mk III Electronic Switchgear, |
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1405 - Disk Operating System DOS v3.20 on 51/2" Diskette IBM (International Business Machines), |
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W.G. Pye, Cambridge, England |
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1411 - Oscilloscope Plugin Timebase Type 3B4 Tektronix, |
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1456 - Card Index of Radiological References D.F. Robertson?, |
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unknown, (around 1900?) Convex objective lenses, concavo eyepiece lenses, straight through viewing, with limited field of view. |
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1477 - Monthly Ionospheric Tabulations Brisbane 1943 CSIR Radio Research Board, |
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1478 - Monthly Ionospheric Tabulations Brisbane 1946 CSIR Radio Research Board, |
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1482 - Notes, ionospheric Data, Examination Papers I. jenkinson (?), |
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1506 - Scale for Reflecting Galvanometer W.G. Pye, Cambridge, |
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1511 - Demonstration Ammeter with Many Shunts Shimadzu, |
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Eimac, with socket, chimney and dissipator |
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