Our hacker [John Duffy] wrote in to let us know about a video he put together to explain the design of his open-source multimeter, the HydraMeter. If you’re interested in how the circuitry ...

A moving coil multimeter loads the circuit it was testing, altering its characteristics. High-impedance voltage measurement, 1950s style.

When you need a multimeter for testing electrical equipment around the home, it's vital to know what all those symbols around ...

Trying to figure out if your electrical outlet is getting power? Grab a multimeter. A multimeter is a versatile tool used by electricians and homeowners to measure electrical voltage, current, and ...

A multimeter is an electronic measuring instrument that is used to gauge volts, amps, and resistance from an electrical source. The most common automotive application for a multimeter is to test the ...

It's a must-have for any toolbox—but there's a learning curve involved. Learn how to use a multimeter for all of your electrical testing needs.

White Deer Multimeter DT-830B Best bargain-basement multimeter Of course, if $150 is too rich for your blood, you can save a few buckaroos on this unit.

Multimeters can be a useful tool for both novices and professionals to limit their mistakes in automotive repair. Here's how to properly use one.

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 ...

Your multimeter should have two wired probes color-coded red and black. They're insulated in plastic, have metal tips and are typically pen-shaped.

The best digital multimeters allow users to trace electrical faults to diagnosis and repair problems with their vehicles.

For all of you who have a multimeter thrown in a drawer or toolbox but don’t know how to use it, these instructions will help in your search for missing voltage.