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It is powered by two AAA batteries (rechargeable or standard) with up to 600- hour battery life
windowless
handheld Geiger counters detect and measure very low gamma energies
0% 9750 cpmGY
It monitors airborne alpha and beta particulate activity in the workplace
WM B Johnson GSM-110 Meter WM B Johnson It is powered by twoWMB Johnson GSM 110 Meter (HP 265 GM Pancake Probe sold separately) 3 Range Survey Meter Description 500, 5,000 & 50,000 CPM . 2, 2 & 20 mR hr Auto Low Battery & Saturation, LED's HV & battery meter Built In Audible Response Variable 4 20 Seconds Application. Add a Counts. Pro (see Ebay item 401468071255) to this meter for $499 and digitally record and easily share all your measurements (a $100 discount off the regular price when you buy one of our