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ID = 27532
Great Britain (UK)
Brand: Standard Telephones and Cables Ltd. (STC); London, Foots Cray
Tube type:  Thyratron Cold-cathode 
Identical to G1/238G
Similar Tubes
Normally replaceable-slightly different:
Other class quality (otherwise equal):

Base B3G Wires only.

Trigger tube for counting and control.

Va 180V. Current range 0.5 to 1.5mA.

Life 1000 hours at 1mA.

This is a lower cost version of the G1/237G and has parameters not so tightly controlled

Dimensions (WHD)
incl. pins / tip
9 x 40 x mm / 0.35 x 1.57 x inch
Weight 3 g / 0.11 oz
Information source - - Manufacturers Literature   STC Data January 1963

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