0-50 V dc. 9.1 kohm resistor included Movement resistance ~ 1 kohm Mounts in a 1.8 x 0.75 hole Depth behind panel 1.75 The basic meter movement draws approximately 5 ma at full scale. It requires approximately 5.5 volts to full scale. When the 9.1k ohm supplied resistor is connected in series with the meter movement the meter displays full scale with 50 volts DC applied. This then matches the 50 volt scale on the meter.