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An Avo Electronic Test Meter, a Smooth Hour power unit for model trains (240 - 12V output), a Taylor Junior voltmeter, a H.W. Sullivan resistance bridge, Muirhead & Co. resistance bridge, two Electric English Model 204 volt dials, a Gambrell Brothers electro magnetic measuring device, a brass electrical connector, a brass amplifier dial, and other electronic devices by a Malder brothers No 30737, C.A Vandervell etc [13]
A portable olive green leather cased bakelite hand cranked mega insulation tester series 3 by Evershed and Vignoles, a record minor insulation tester, a Skymaster Ghost high speed timing clock, brown microphone amplifier, Cambridge Instrument Co, uni pivot DC range box, two H.W Sullivan variable condensers, a cased voltmeter, an English Electric Co voltmeter in metal box and a calibration chart condenser for microphones (10)
A quantity of telegraphy equipment etc to include a 1917 Silvertown No. 3432 Telegraphy relay amplifier with relay letters T, S, D, U, M all brass on wooden base with brass turning point for Spacing and Marking, a Post Office Relay Type B No. 10232, A GPO 4410 and three others along with an Ayrton & Mathers Universal Shunt (some damage to bakelite top), conductors, dials etc [14]

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12955 item(s)/page