The E-120 has served the nuclear industry for many years and is still in use at many nuclear stations.  They are sensitive enough to let you know if you have a hazardous condition or for use in general surveys.  These are GM only meters that will drive any GM Detector that you will need to operate the unit (we have plenty). 

Meter face 0-5000cpm (0-5mR/hr)

Scales 0.1X, 1X, 10X

A no nonsense meter with relative small size.  You will need a GM probe to operate this meter.

You will need an SK-1 speaker or headphones to hear any clicks.  We sell the SK-1 speaker for $40 each with cable and the associated battery.  Let us know and we will add it to your order.