What is the purpose of an amp meter?

The purpose of an amp meter is specifically to measure amperage, which is the flow of electric current in a circuit. This measurement is crucial for assessing the performance of electrical systems, including those found in small engines. Understanding the amount of current flowing through a system helps diagnose electrical problems, ensures that components are operating within their specified limits, and aids in the effective management of electrical loads.

While voltage measurements are important, they are the domain of a voltmeter, and testing circuit continuity typically requires a multimeter set to continuity mode, not an amp meter. Similarly, calculating power in watts involves both voltage and amperage (using the formula Watts = Volts x Amps), but this calculation is not the primary function of an amp meter. The instrument is fundamentally designed to provide accurate readings of how much current is flowing in a circuit, which is essential for the safe and efficient operation of electrical systems.