Digital Pocket Geiger Counter, Each

Details:

Detector : halogen-quenched, long thin cylindrical geiger-mueller tube (lnd712) with side wall of .012" #446 Stainless steel, and with thin mica end window, window size : 1.5 To 2.0 Mg/cm² thick, radiation detected : alpha, beta, gamma, x-ray, accuracy; ± 10%typical;±15% maximum