Extra nice Late model Johnson GSM-110 with super end window GM probe.

The condition is quite good with the exception of several scrapes on the base only.

Meter scale 0-0.2 MR/HR,0-500 C.P.M., battery test volts,and high voltage readout.Total Range 20 MR/HR or 50,000 C.P.M.

Functions OFF,X100,X10,X1.Responce FAST/SLOW adjustment,Audio ON/OFF, Reset button Battery or Hih Voltage readout on meter.

Features an anti saturation circuit with warning led (upper right meter dial) and low battery led (lowar left meter dial)

The thin mica end window  probe is a GM sensitive to ALPHA above 4 MEV,BETA above 70 KEV,and GAMMA / X-RAY above 6 KEV with window open, and higher energy  compensated-

GAMA with the window covered.With window open it is usable to at least 80 Mr/Hr before saturation.

I have Pulse Count Calibrated it per manufactures specification,and checked it with a Cs137 source.

The audio is quite good and it has a pizeo unimorph speaker which is water proof.

Powered by 2 9volt batteries (NEW batteries included)

There may come a time in our future when it will be necessary to check our food and water for contamination.The best time to prepair is before anything happens.

Take a look at this threat.(I pray that nothing comes of it but even an accident could have a major impact on our lives. http://w3.newsmax.com/a/dayofislam/?PROMO_CODE=39D5-1

You will receive this super nice scientific instrument Pulse Count Calibrated with new batteries and a test source.(Ready to use out of the box.)