Robertson G.E.C. Carbon Filament Lamp 230V 16CP
Lampe à filament de carbone à 4 boucles
Kohlefaden-Glühlampe

Robertson Electric Lamps Ltd., Hammersmith (GB), established in July 1893.
1930's.
CP = Candlepower = Bougie = Kerzenstärke (1 CP = 0.981 candelas).

The 4 pin base suggests that this lamp was used as a resistor ballast in old battery chargers or radio equipments. The DC resistance measures 1400 ohms.

 

Hauteur • Height • Höhe : 13 cm • 5" 1/8
Diamètre • Diameter • Durchmesser : 6 cm • 2" 3/8

 

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