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.” ...

Car batteries don’t just die. Well, they will if you leave them for long enough. but not just over the course of a few hours or even just a day or two. Finding your car has a dead battery after it was ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? A digital multimeter is an indispensable tool for testing, diagnosing, and ...

We may receive a commission on purchases made from links. Electrical diagnostic work is one of the most challenging parts of automotive repair. It can be incredibly daunting for beginners or DIY ...

Let's start with DC voltage, one of the simplest and most-used multimeter measurements. The DC voltage measurement is used to determine the difference in electrical potential between two points in a ...

When you measure a voltage, how do you know that your measurement is correct? Because your multimeter says so, of course! But how can you trust your multimeter to give the right reading? Calibration ...

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 ...