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Geiger Counter Tubes
B8A49724 - Geiger-Muller Tube - Mullard ZP1481 | Philip Harris
A spotter's guide to the SBM-20 Geiger counter tube | MightyOhm
Geiger Tube - COM-08875 - SparkFun Electronics
Geiger Counter, Digital, LCD Time/Rate, w/o Tube, Battery or Plug Pack [AP1884-002] : Aim Scientific - A leading provider of laboratory and chemical supplies to the Scientific, Clinical and Educational laboratories, Adelaide