A GM tube from 3B Scientific, with a self-quenching halogen pulse ionisation chamber, for detecting alpha, beta, gamma and x-ray radiation. The GM detector is mounted within a metal housing, with mica window, and a removable mounting clamp with shaft. Operating voltage: 400 - 600V (recommended: 500V). The GM tube holder comes with a BNC fitting, but is supplied WITHOUT a BNC lead, which is available separately (RAD-350-150). Size: Shaft - 100mm x 10mm diameter; Window 9mm diameter; Tube - 85mm x 25mm diameter. Designed for use with a 3B Scientific scaler timer.
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