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Multiple Tuner, by Marconi Company, London, 1907
Inventory Number: 36479
Date: 1907
Maker Details: Signed by Marconi's Wireless Telegraph Co. Ltd.
Inscription: "MARCONI'S WIRELESS / TELEGRAPH CO LTD / NO 57823 LONDON / PATENT NO / 12960/07" etched into ebonite surface.
Size: 480 x 200 x 130 mm (excluding dials)
Materials: Mahogany, ebonite, brass, copper, bakelite.
Other Given Number(s): Christie's 38.
Notes:
Multiple Tuner, in mahogany case with ebonite surface and front panels. With aerial tuning inductance knob (scale 0-4000 micro-henries) and tuning switch with three sets of studs interconnected (wavelength scales 260-8550 feet. 150-2000 metres) on front surface. With three tuning condensers (detector, aerial and intermediate), copper standby/tune switch and four brass terminals (aerial, earth and two for detector) on top surface. With bakelite coil control knob on side surface.
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