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Siemens Rohre, |
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Electronic Enterprises , |
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G K Electrical Co, |
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671 - Gramophone needles in tin Columbia brand, Usa Gramophone needles 15 mm long by 1 mm thick. Used once each to play 78 RPM discs. |
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672 - Telephone Wire Insulator (1) CCG, |
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673 - Telephone Wire Insulator (2) A.G.M, |
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Thomson-Bennett, |
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Shure Bros, |
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Short and Mason, |
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Smart-Bristow, |
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679 - AC Power Frequency Meter General Electric Company, Schenectardy, N.Y., U.S.A., Frequency meter for 25Hz operation, originally from Ultimo Power Station in Sydney. |
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680 - Mercury Vapour Tube Ballast UNK, |
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P.L.U.Q., |
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Fairchild Camera and Instrument Corp., |
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Muirhead & Co. Ltd, |
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UTO, |
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Fuji, |
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Sun Hemmi, bamboo slide rule |
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Air Ministry, |
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R.A.E., This is an electrodynamic pickup with a coil of wire moving in a permanent magnet field. Used by Australian army to detect distant movement of heavy equipment or close movement of troops. |
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Unknown, This geophone, or jug, is typical of those used in the 1960s search for oil in Australia. It consists of a coil of wire suspended in a permanent magnet field. It was screwed on to a spike (absent) and stuck in the ground. Two wires were connected... |
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692 - Seismic Galvanometer Bank S.I.E. (Southwestern Industrial Electronics), Usa This unit contains a maximum of 12 pencil galvanometers in a block permanent magnet. They are driven by a bank of amplifiers to record seismic shot data from geophones. Two banks are usually required to give 24 channels of data from one seismic shot... |
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UNK, |
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694 - Strobotuner electronic timer C G Conn Ltd., Elkhart, Indiana, |
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RCA, |
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Palmer, |
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PYE, England |
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Tinsley, England |
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EEL, England |
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PYE, |
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United Geo, Usa |
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UNK, England Miniature galvanometer used for recording seismic signals. |
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706 - Seismic Galvanometer pair UNK, These galvanometers may have come from the Charters Towers area. |
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Cambridge Instrument Co. Ltd. England, The unipivot galvanometer was invented by Robert W. Paul in 1903. It is a classic of careful instrument design and continued in production for over 50 years. As in the more common form of moving coil galvanometer (D'Arsonval) a coil is... |
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708 - Demonstrator Galvanometer UNK, The meter is an open construction d'Arsonval movement. A two-way switch reverses polarity of the attached 1.5V cell. When a a push-button is depressed, the needle deflects in a direction determined by the two-way switch. |
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709 - Frequency Standard 1000 cycles American Time Products, Usa |
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NORMA, |
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Mullard, |
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CBS, |
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RCA, |
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714 - Valve, Double Triode 5692 RCA, |
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715 - Valve, Twin Triode ECC81 IEC, |
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RCA, |
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GE, |
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718 - Leaky Waveguide & rotating joint UNK, |
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Geotech, |
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721 - Permissible Noise Exposure Calculator QLD Govt. WHS Dept of E.T.I.R., |
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722 - Valve, Seismic Amplifier Dresser SIE, |
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Massa, |
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Sanders, |
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For Clyde Fuel Systems Ltd. , England Six inch plastic rule with A,B,C,and D scales, marked 'Made in England' S137 on the front. The back is branded CLYDE FUEL SYSTEMS LTD COMBUSTION ENGINEERS HILLINGTON GLASGOW. S.W.2 |
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728 - Galvanometer mirror on stand UNK, |
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729 - Electric light holder & bracket UNK, |
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730 - Light dependent resistor UNK, |
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731 - Galvanometer Suspension Units Leeds and Northrup, Usa The suspension wire is 24K gold. It is 7/10000 inch in diameter. Great care is needed in transferring the wire from the mandrel to the galvanometer. |
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Tung-Sol, |
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AWV Radiotron, |
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Ken Rad, |
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735 - Valve, pentode 6AJ7/6AC7 GE, |
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Mullard, |
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737 - Valve, duo-diode 6H6/VT-90 RCA, |
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Radiotron, |
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Mullard, |
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AWV Radiotron, |
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AWV Radiotron, |
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RCA, |
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743 - Valve, triode tetrode 6CQ8 Miniwatt, |
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Mullard, |
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Philips, |
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Ediswan, |
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Ken Rad, |
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Miniwatt (Philips), |
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Haltron, |
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750 - Valve, duo-diode 6AL5/EB91 Trigon, |
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751 - Valve triode 6BK4C/6BL4A Realistic/Tandy Corp. , |
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