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.
