There’s perhaps no sound more recognizable than the frantic clicking of a Geiger counter ... old Civil Defense Geiger counters. Perhaps even integrating an analog gauge that can bounce around ...

[Ryan Harrington] shows us how to make a Geiger counter with very few parts, and you can see the results in the video below. The glut of surplus Russian tubes has made this a common project ...

W. BOTHE in the Zeitschrift für Physik (vol. 59, p. 1) describes a method for registering simultaneous impulses of two Geiger's counters, which depends principally on the working of a two-grid ...