This Geiger-Müller pipe is a Frederiksen developed GM pipe with BNC connector. The tube can be used for use in alpha, beta or gamma ray detection experiments.
The pipe is supplied with a rod that can be used for clamping. The removable protective cap is for shielding the tube's somewhat delicate mica window (tip). When measuring the sources, the following instructions can be used with the protective cap:
Bias voltage: 500 V
Effective length of tube: 38.1 mm
Gas filling: Ne + halogen
Diameter: 9.1 mm
Thickness: 1.5 - 2.0 mg/cm2