Ohmmeters are devices used to measure electrical resistance in ohms, providing accurate and reliable resistance measurements. They are used in applications such as electrical testing, circuit troubleshooting, and component evaluation, ensuring precise resistance determination. Ohmmeters offer features such as high precision, digital displays, and multiple measurement ranges, making them essential for verifying the integrity and performance of electrical components and systems. Their ability to provide reliable resistance measurements makes them valuable for optimizing electrical performance and ensuring component quality.