What is a Multimeter?A multimeter, also known as amultitesterorVOM(Volt-Ohm-Milliammeter), is an electronic measuring instrument used to measure various electrical parameters.Multitesters are a standard diagnostic tool for technicians and electricians in the electrical & electronic industries (see the fulllist of electricians tools).A typical multimeter can measure voltage, current, and resistance. Thebest multimeterscan also measure other electrical characteristics such as continuity, frequ