Catalogue
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'Marconi' Ammeter, by Marconi Company, England, 20th Century
Inventory Number: 62660
Date: 20th Century
Maker Details: Attributed to Marconi's Wireless Telegraph Co. Ltd.
Inscription: "No162192 / AMPERES / B.S.1ST GRADE / 'MARCONI'" printed on upper surface of interior ampere scale.
Size: 190 mm (in diameter)
Materials: Glass, steel?, brass, copper?, nickel.
Other Given Number(s): Christie's 178.
Notes:
'Marconi' Ammeter, in black-painted steel? cylinder with glazed top surface edged with nickel-plating and revealing interior. Circular interior printed surface has half-moon ampere scale with needle (scale 0-15). With two painted brass bolts and nuts, and attached corroded copper? coil. Previously catalogued with Onwood's Patent ohmmeter'>Ohmmeter (Inv. Num. 95036), Three-Position Switch (Inv. Num. 40839), Carborundum Detector (Inv. Num. 90595), Small Coupled Two-Way Switch (Inv. Num. 61022).
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