Model thin walled beta-sensitive Geiger-Muller tube
1947
Model of metal bodied end window Geiger-Muller tube
1950-1970
Geiger-Muller tube
1949
Presentation model of Geiger-Muller tube with medical needle
1950
Presentation model of an early high current Geiger-Muller tube
1949
G.M. counter tube, type GM 1B. Cin Tel. Serial no
1939-1950
One G.M. counter tube, type B 12E. This tube has b
1945-1950
G.M. counter tube, type EHM2. G.E.C.
1939-1950