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Direct Reading Portable Decremeter, by Marconi Company, London, 1909

Inventory Number: 28627

28627-2t 28627-1t 28627-3t 28627-5t 28627-4t

Date: Dated 1909

Maker Details: Signed by Marconi's Wireless Telegraph Co. Ltd.

Inscription: "MARCONI'S WIRELESS TELEGRAPH CO. LTD. / NO 12799 / LONDON" etched into tuning condenser dial. "PATENT NO 185/09" etched into ebonite surface near hinge."DT ROOM" burned into exterior of lid.

Size: 440 x 250 x 130 mm (lid closed)

Materials: Teak, brass, leather, ebonite, bakelite.


Direct Reading Portable Decremeter with ebonite surface, and brass and bakelite additions. In teak case with hinged lid, and leather strap on side. With bakelite sliding decrement scale (scale 0-60) on separate ebonite surface, bakelite adjustable tuning condenser dial (scale 0-9,SHORT), Resistance, Thermo Junction and Inductance brass terminals, and two-way pressure switches. With printed tables of decrement per 1/2 period, and wave lengths in metres and capacity in mfds pasted to interior of lid. With printed removable card table of condenser readings and wave lengths in metres in small interior compartment. With separate related printed leaflets.

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