A galvanometer is a mechanical moving-pointer type meter, especially an old one, or its motive mechanism used as a component in other devices.

A time domain reflectometer is a test instrument for finding faults in cables.

A multimeter is a general-purpose test instrument.

A VU meter is a specialised meter measuring volume of audio signals.

In electronics, a meter is an instrument for displaying the magnitude of one of a wide variety of quantities in electrical circuits. The term can refer to either an electronic component that is part of a larger device, or a free-standing test instrument.

A voltmeter is a specialized meter measuring voltage.

An ammeter is a specialized meter measuring electric current.

An ohmmeter is a specialised meter measuring electrical resistance.

A wattmeter is a specialized meter measuring electric power.

A capacitance meter is a test instrument measuring capacitance.

An electrometer is a test instrument measuring electric charge.

A clamp meter is an AC current-measuring test instrument that clamps around a wire.

An EMF meter is a test instrument for measuring electromagnetic fields.

An SWR meter is a test instrument for measuring the standing wave ratio of a radio transmitter and its antenna.

An S meter is a component of a radio receiver that displays the received signal's strength.

An electric meter and smart meter are instruments that measure the electric power delivered to a customer by a utility for billing purposes.

A grid dip meter, or dip meter, is a test instrument for measuring the resonance frequency of radio circuits.

A microwave power meter is a test instrument for measuring the power of microwave signals.