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McMurdo, |
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GE, Usa This pencil triode has planar electrodes with very small spacing between them. This reduces electron transit time between them, thus allowing the triode to operate at the upper end of the UHF band (3 GHz). The valve was mounted with coaxial... |
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Marconi, |
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OSRAM, |
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L. S. Starrett, |
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MRC, |
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UNK, |
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Westinghouse, |
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587 - Weston Galvanometer Model 260 Weston Elect. Inst. Corp. Newark NJ USA, Usa |
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591 - Calibrating Box, Mats testing Amsler, |
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594 - ECK 24R Quartz Master Clock Patek, Philippe & Co. , |
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Cambridge Inst., England |
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Philip Harris , |
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600 - GGS Collimator & GGS Spaces US Navy, Usa |
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601 - GGS Mk10 Gyroscopic Gunsight Naval Ordance, Indiana , Usa |
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603 - Decade counter tube Z303C Mullard, |
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605 - Aristo Scholar Sliderule Aristo, |
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606 - Leeds & Northrup Galvanometer Leeds and Northrup , Usa |
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Siemens, |
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Raytheon, |
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AWV, |
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RCA, |
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AWV, |
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612 - Valve twin triode 6080/CV2984 UNK, |
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Philips, |
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AWV, |
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616 - Valve full wave rectifier 6X5GT Briman, |
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Miniwatt, |
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Amperex, |
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UNK, |
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620 - Valve full wave rectifier EZ35 Mullard, |
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Philips, |
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Siemens, |
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AWV, |
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Philips, |
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RADYO, |
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626 - Valve triode pentode 6BM8 UNK, |
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628 - Valve twin triode E188CC Telefunken, |
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Mullard, |
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Mullard, |
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Valvo, |
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Philips, |
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Mullard, |
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Toshiba, |
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Telefunken, |
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636 - Valve twin triode 12AU7A Toshiba, |
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637 - Valve pentode twin diode 6BV7 AWV, Australia This valve was made for domestic radio receivers. It contains a sensitive high slope power pentode to drive a loudspeaker. It was used in place of two valves, the first Audio Frequency (AF) stage and the power output stage. It also contains two... |
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638 - Valve diode pentode 1S5 + socket/shield AWV, Diode Pentode valve used in battery operated valve radios. It had a filamentary cathode, rated at 1.5V 50 mA. Anode 90V. It was the audio detector and first AF amplifier stage. |
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RCA, |
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Brimar, |
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Philips, |
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643 - Valve triode pentode ECF804 UNK, |
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UNK, |
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W G PYE, England Tripod with central threaded leg and circular vernier scale. The spherometer measures the height difference between the tripod legs and the central leg. Knowing this height and the distances from tripod legs to central leg, a standard... |
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646 - Quadrupole Spectrometer Gun Assembly UNK, |
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647 - Direct Current Galvanometer J. L. William, Australia |
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Ormond, |
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649 - Galvanometer, Leeds & Northrup Leeds and Northrup Co., Philadelphia PA, Usa Reflecting Mirror Galvanometer. |
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Leeds and Northrup, |
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652 - Circular Slide Rule No. 1660 Star, Japan, Japan (circa 1960?) Japanese circular slide rule of plastic coated aluminium. |
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TMK, Japan |
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H. Tinsley, England Sensitive d'Arsonval meter for low voltages and currents. It has a sensitivity of 100,000 Ohms per Volt, and measures in the ranges 12mV to 12V FSD, and 12microAmps to 1.2 Amps FSD. |
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American Paulin System, Usa This apparatus is designed to measure altitude or atmospheric pressure. It is clockwork operated, and records for 24 hours on graph paper using an inked pen. |
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Torit, |
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Leeds and Northrup, |
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Venner Electronics, |
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Cambridge Inst., |
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Western Electric, |
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UNK, |
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