When someone mentions calibration, engineers probably think of voltage, frequency, and other fundamental electrical measurements. Light measurements may not come to mind unless these engineers work ...

A pH meter measures a pH or the acidity/alkalinity of substances. Most pH meters rely on a glass electrode that measures the number of hydrogen ions in the solution. Usually, pH meters need to be ...

Somewhat surprisingly, Pro-M says bad grounds are perhaps the most common culprit in diagnosing mass air meter problems. Not grounds within the meter itself, but poor vehicle grounds, such as failure ...

Let's say you're performing a critical calibration or measurement in a bridge configuration. You have your choice of a high-resolution digital multimeter and an analog nullmeter with nanovolt ...