The Keithley Model 177 Microvolt Digital Multi Meter

The Keithley Model 177 Microvolt Digital Multi Meter is a versatile, highly sensitive meter which is used for measurement of DC and AC voltages, resistance, as well as AC and DC currents. A four 1/2 LED display counts up to 20.000 digits. The 177 reads in its most sensitive DC range of 20 mV with a resolution up to 1 µV. On the rear panel an analog output of 1V/10.000 counts. The option 1788 battery pack supplies the instrument for some hours with power. In small measurement ranges an offset error can be adjusted to zero with the front knob "zero".