Avometer vs. Multimeter — What's the Difference?

AVOmeter is a British trademark for a line of multimeters and electrical measuring instruments; the brand is now owned by the Megger Group Limited. The first Avometer was made by the Automatic Coil Winder and Electrical Equipment Co.

A multimeter is a measuring instrument that can measure multiple electrical properties. A typical multimeter can measure voltage, resistance, and current, in which case it is also known as a volt-ohm-milliammeter (VOM), as the unit is equipped with voltmeter, ammeter, and ohmmeter functionality.

An instrument that combines an ammeter, an ohmmeter, a voltmeter, and occasionally other measurement or testing devices into one unit.

An electronic measuring instrument that combines multiple functions; a combined voltmeter, ammeter and ohmmeter.