You can answer all those questions — and many more — with a basic meter. But there’s one thing that hasn’t changed much over the years: probes. That’s a shame because there are a lot of ...

We’ve seen these probes built from scratch, too. You do need a meter that will do the actual four-wire measurement, although a power supply and a voltmeter will do the job, too. If you don’t ...

Moisture levels in sand play a critical role in construction and manufacturing. Too much water can weaken concrete, while too ...