Johnson gsm-500 alpha beta gamma radiation survey meter w/ probe

Description

If you have any questions regarding this unit or any item I have for sale, please let me know .thanks......Jim
Here is a used wm b johnson model gsm-500 auto ranging analog survey meter. This is used for measuring alpha, beta and gamma radiation. It comes with a hp-265 handheld probe. It is a tested working unit.
It has auto dose linearization of each probe, simultaneous calibration, cpm and dose. It is full auto ranging integration and peak holding operation modes. It has diagnostics for visual or low battery detector, saturation and hv out of range indicators. It has adjustable high voltage from 300-1300 volts +/-1 percent.
It is  a used unit. If you can use this unit, go ahead and buy it.
**** Thanks........Jim*****b4 bin 2 77777 14x12x10 10 free ship 11-13-2020
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