Catalogue
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Carborundum Detector, Early 20th Century
Inventory Number: 90595
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.
Notes:
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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