While using a digital multimeter to diagnose electrical problems on customers’ equipment, I frequently hear the comment, “I’ve got one of those multimeter things, but I never learned how to use it.” ...

Multimeters can be a useful tool for both novices and professionals to limit their mistakes in automotive repair. Electrical diagnostic work is one of the most challenging parts of automotive repair.

While only 12 of the 203 reviews award the MM420 fewer than 4 stars, there are some issues worth noting. The most common reported user issues include difficulty reading the screen in brightly lit ...

When working on electrical projects around the home—whether that’s troubleshooting an issue with your HVAC system, repairing an appliance, or testing a car battery—a multimeter is essential. These ...

One of the easiest ways to check if your camshaft sensor is faulty is by using an OBD-II scanner, which reads diagnostic ...