191 Keithley Multimeter
The 191 is a 5.5 digit bench multimeter from Keithley. A multimeter is an instrument used to test and measure alternating current (AC) or direct current (DC) voltage, resistance, and electric current. Multimeters combine voltmeters, ammeters, and ohmmeters. Electricians use multimeters to run diagnostics on batteries, switches, components, power sources, and motors.
- Measures DC volts from 1 µV to 1200 V
- Measures resistance from 1 megohms to 20 M-ohms
- Push button Null - eliminates potentiometer zeroing