A clamp meter is a type of electrical measuring instrument used to measure the current flowing through a conductor without needing to disconnect it. It features a hinged jaw that can clamp around a wire, allowing for quick and safe measurements of alternating current (AC) or direct current (DC). This tool is commonly used by electricians and technicians for troubleshooting and monitoring electrical systems. In addition to measuring current, many clamp meters also have the capability to measure voltage, resistance, and continuity. They are essential for ensuring the safety and efficiency of electrical installations and are often used in conjunction with other tools like multimeters and oscilloscopes for comprehensive diagnostics.