Keithley KEITHLEY 155 Null Detector-Microvoltmeter

The Keithley 155 Null Detector/ Microvoltmeter is a high-performance, low-cost instrument with better than 150nV resolution and full-scale ranges up to 1kV. Its electrical and physical ruggedness, broad range, and high common- and normal-mode rejection make it one of the most versatile voltmeters available for applications in standards labs, development labs, production testing, and basic research. RANGE: ±1µV full scale to ±1000V on zero center meter in 19 overlapping 1× and 3× ranges. Battery powered. ±2% of full scale. Common Mode Rejection is equivalent to 140 dB. Input resistance 100 Mohms, 3-1 kV range.