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Carborundum Detector, Early 20th Century

Inventory Number: 90595

90595-2t 90595-1t

Date: Early 20th Century

Maker Details: Unknown

Inscription: None

Size: 65 mm (in width) x 50 mm (in length)

Materials: Ebonite, nickel.

Other Given Number(s): Christie's 178.


Carborundum Detector, on ebonite base. With nickel-plated components including switch and two terminals. Previously catalogued with Onwood's Patent ohmmeter'>Ohmmeter (Inv. Num. 95036), Three-Position Switch (Inv. Num. 40839), 'Marconi' Ammeter (Inv. Num. 62660), Small Coupled Two-Way Switch (Inv. Num. 61022).

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