An amperage meter, also known as an ammeter, is a device used to measure the flow of electric current in a circuit. It is typically expressed in units called amperes (A). Amperage meters can be found in various forms, including analog and digital displays, and are essential for monitoring electrical systems to ensure they operate safely and efficiently. These meters are often used by electricians and engineers to troubleshoot electrical issues or to verify that devices are functioning within their specified current limits. Proper use of an amperage meter helps prevent overloads and potential damage to electrical components, ensuring the reliability of systems like home wiring, industrial machinery, and electronic devices.