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'Marconi' Wavemeter Type MP7, by Marconi Company, London, Early 20th Century

Inventory Number: 49422

49422-3t 49422-2t 49422-1t

Date: Early 20th Century

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

Inscription: See Document.

Size: 195 x 125 x 85 mm (excluding lid components)

Materials: Carborundum, paper, wood, plastic, ebonite, steel

Other Given Number(s): Christie's 136, 849/2 (white tag), Science Museum Loan 1936-275.


'Marconi' Wavemeter Type MP7, with carborundum detector dial (scale 0-100), neon indicator, crystal on/off switch and phones plug on ebonite surface. Printed paper table of wavelength and condensor readings attached to side of grey-painted wood case with metal and plastic cover. Previously catalogued with Townsend Wavemeter (Inv. Num. 78507).

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