Scientrox 5 Volt Measurement Meter for Science Project Experiment and Science lab Voltmeter  (Analog)

A voltmeter is an instrument used for measuring electrical potential difference between two points in an electric circuit. Analog voltmeters move a pointer across a scale in proportion to the voltage of the circuit; digital voltmeters give a numerical display of voltage by use of an A voltmeter, also known as a voltage meter, is an instrument used for measuring the potential difference, or voltage, between two points in an electrical or electronic circuit. ... A basic analog voltmeter consists of a sensitive galvanometer (current meter) in series with a high resistance.