MultimetersA multimeter, also known as a multitester or a volt-ohm meter (VOM), is a device that is used to measure electrical quantities such as voltage, current, and resistance. Multimeters are commonly used in a wide range of applications, including electrical and electronic testing and troubleshooting, education and training, and field service and maintenance. Multimeters are versatile instruments that can measure a wide range of electrical quantities, making them useful for a variety of tasks. Some common types of multimeters include digital multimeters, which display the measured quantity as a digital reading; analog multimeters, which display the measured quantity as a position on a calibrated scale; and clamp meters, which can measure current without coming into direct contact with the conductor.