Catalogue
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Variable Resistance Switch For Aircraft Wireless Telephone Type AD2, by Marconi Company, England, c. 1920
Inventory Number: 99434
Date: c. 1920
Maker Details: Attributed to Marconi's Wireless Telegraph Co. Ltd.
Inscription: None
Size: 100 mm in diameter
Materials: Plastic?, nickel, assorted metals.
Other Given Number(s): Christie's 144.
Notes:
Variable Resistance Switch For Aircraft Wireless Telephone Type AD2, as used in the associated remote control unit. With circular metal coil around red plastic? central mounting. With nickel-plated terminals and control switch. Previously catalogued and associated with Instruction Manual For Aircraft Wireless Telephone Type AD2 (Inv. Num. 32919) and Aircraft Wireless Telephone Type AD2 (Inv. Num. 12938).
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