General Radio 1864 Megohmmeter 50kohms to 200 Teraohms

General Radio 1864 Megohmmeter. The General Radio 1864 Megohmmeter offers variable test voltages which may be set between 10 to 109 volts in 1 volt steps and to 1090 volts in 10 volt steps.The 1864 has eight ranges which permit measurements from 50 kohms to 200 Teraohms

This Megohmmeter came to us from a retiring electrical engineer who used this in his calibration and product development electronics lab.