So a few months ago, I stumbled upon a thing at Adafruit.com called a "Charger Doctor" which was really just a Multimeter designed to slip inline with your USB cable. It was $7.50 and I liked it.

Craig brought 15 years of automotive journalism experience to the Cars team. A lifelong resident of Michigan, he's as happy with a wrench or welding gun in hand as he is in front of the camera or ...

The Agilent U1270 Series handheld digital multimeters (DMMs) are designed for technicians who work in harsh industrial environments. The series provides a wealth of measurement capabilities including ...

Saelig Company, Inc. rolled out the 1908 and 1908P Digital Multimeters (DMMs) – high accuracy, high resolution dual-measurement benchtop instruments with USB and other optional interfaces. Additional ...

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 for a ...