An Ohm Meter, also known as a resistance meter, is a crucial device used to measure the electrical resistance of a component or circuit. It operates by applying a small voltage across the test object and measuring the resulting current to calculate the resistance, typically displayed in ohms (Ω). This tool is essential for diagnosing and troubleshooting electrical circuits, as it helps detect faulty resistors, open circuits, or short circuits. Ohm meters are commonly used in various applications, from electronics repair and automotive diagnostics to industrial maintenance. With easy-to-read digital or analog displays, they offer accurate and reliable resistance measurements for both professionals and hobbyists.