Clamp meters and multimeters are essential tools in electrical diagnostics, each serving specific purposes. A clamp meter is designed primarily for measuring electric current without needing direct contact with the conductor. It works by clamping around a live wire, detecting the magnetic field generated by the current, which makes it ideal for high-voltage environments and live circuits where safety is a priority. Modern clamp meters can also measure voltage and resistance, offering multifunctional convenience for electricians and technicians.

A multimeter, on the other hand, is a versatile tool capable of measuring voltage, current, and resistance, along with continuity and sometimes additional functions like frequency measurement. Multimeters are indispensable for troubleshooting and testing circuits in electronics, automotive repair, and household applications. Some models combine the functionality of a clamp meter and a multimeter, allowing users to check both current and voltage without switching tools. These tools help in identifying faults, verifying circuit health, and ensuring equipment safety, making them valuable in electrical maintenance.