Description

A voltmeter is an instrument used to measure the electric potential difference, or voltage, between two points in a circuit. It is typically connected in parallel with the circuit and provides a reading of the voltage difference in volts (V).

A square is a geometric shape with four equal sides and four right angles. In the context of a lab voltmeter, “square” could refer to the shape of the voltmeter’s display, which may be a square shape with a digital readout of the voltage measurement.