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ID = 42900
Great Britain (UK)
Brand: Common type Great Britain tube/semicond.
Tube type:  CRT (cathode ray tube, picture tube)   Indication 
Identical to CV5119 = 31C14/T1
Similar Tubes
Heater different:
Predecessor Tubes 31C2  

Base Duodecal (12-pin), B12A (not glass) Sidecontact.
Filament Vf 6.3 Volts / If 0.6 Ampere / Indirect / Specified voltage AC/DC
Description Magnetic deflection and focus

6" aluminium backed measurement tube for DF Compass.
Concave face with integral compass marks. 

Dimensions (WHD)
incl. pins / tip
152 x x 458 mm / 5.98 x x 18.03 inch
Information source - - Manufacturers Literature   
-- Original-techn. papers.   

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