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CONTAMINATION LIQUID HEAD DETECTOR, 1950's
Spare detector head for the contamination meter Item A0513.
For reading liquids
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- This is an M2H GM tube which is still in the Centronics Geiger selection guide.
Its working voltage is 370V, plateau length 100V, maximum slope %/V 0.15 Active Length 20mm
.......... Stella, Hove UK, 17th of March 2010