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Geiger Counter Test Card

Geiger Counter Test Card

$14.95
Geiger Counter Test Card Real-time functionality test of a Ludlum Model 3 Geiger Counter with 44-6 Beta/Gamma Probe. Scale set to 1x.   How do you know your Geiger Counter works without something radioactive to test it on? Introducing our Geiger Counter Test Card! These...
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