voltage meter
Reads potential difference
A voltage meter, also called a voltmeter, is an instrument used to measure the electrical potential difference between two points in a circuit.
The reading is expressed in volts.
Voltage meters range from simple handheld devices used by electricians and hobbyists to precision laboratory instruments.
Most modern multimeters include voltage measurement as one of their functions.
The technician used a voltage meter to check whether the outlet was live.
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