Multimeters are versatile electronic measuring instruments used to test and diagnose electrical and electronic circuits. They are designed to measure multiple parameters such as voltage, current, resistance, continuity, and, in many models, capacitance, frequency, and temperature. Multimeters play a vital role in troubleshooting, maintenance, and quality control by providing accurate and reliable readings. Available in analog and digital types, they come with different measurement ranges, accuracy levels, and safety ratings to suit various applications. Multimeters are widely used in electronics servicing, industrial maintenance, automotive diagnostics, laboratories, and educational institutions, contributing to safe operation, precise measurement, and efficient fault detection.