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

A voltmeter and ammeter are to an electrical system what a pressure gauge and a flow gauge are to an oil pressure system: A voltmeter measures electrical pressure in volts; ...

If you want to measure voltage you reach for a voltmeter. Current? An ammeter. Resistance? An ohmmeter. But what about measuring AC power? A watt meter? Usually. But if you know what to do, you cou… ...