Wm. B. Johnson GSM-115 Survey meter Geiger counter radiation HP 265 probe works - $290 - (St. John, KS)
Like new GSM-115 Survey meter. No defects at all...Like New! 3rd picture shows it reading back ground radiation in my shop, about 50 cpm. HP-265 pancake probe detects Alpha, Beta, Gamma and X-Ray radiation. Pics 4 and 5 show it detecting on old Radium clock dial on 2 different ranges. Reads out in mR/hr and CPM. Inside and outside spotless. Includes operation and maintenance manual. Uses 2 - 9 volt batteries (included) for 200 hours of operation (will work right out of the box!). Has 4 linear ranges for 0 to 500,000 cpm and 0 to 200 mR/hr. Reads battery voltage and high voltage directly on the meter scale. High voltage is adjustable from 300 to 1300 volts for utilizing different probes. Uses standard BNC connectors. Unit lights a "saturation" light if unit is in a high radiation field and the probe saturates. Will ship in USPS Priority mail flat-rate box for 2 to 3 day delivery. Any questions please ask.
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From ebay.com - 1 month ago