One of eighty-six early incandescent lamps. Arch F
One of eighty-six early incandescent lamps. Arch Filament, No supports, Lead-in wires pass through long stem, tear dropped shaped bulb, claw, top pip. Non-Standard brass base slightly tapered with shallow groove and pronounced flange, plaster attached and insulated, with flush central button for second contact. No markings.
- Object Number:
- carbon filament lamp
- Institution of Electronical Engineering
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