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ID = 27677
Great Britain (UK)
Brand: GEC, General Electric Co.; London
Tube type:  COUNTING AND MEASUREMENT, general   Text 
Identical to CV95 = R3/10

Base Wires only.
Filament No heater
Description Bolometer Tube. Tungsten filament, 6.5 ohms cold resistance, 21.5 ohms approx. at 10.5mW. 
Information source - - Data from my own collection   
-- Original-techn. papers.   
Emilio Ciardiello

CV95: Manufacturer's Literature
Emilio Ciardiello

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