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 ...

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

Object Details maker Leo Daft Location Currently not on view Credit Line from Matilda Daft Williams ID Number EM.310590 accession number 123398 catalog number 310590 Object Name meter ammmeter, ...

How Redline Gauge Works Makes Old Ford Tachs Work with Modern Ignitions and Turns Ammeters into Voltmeters—All Without Changing Their Original Appearance.

The “Wood” Ammeter and Voltmeter Join Our Community of Science Lovers! Sign Up for Our Free Daily Newsletter 0 0 ...

This article was originally published with the title “The Construction of a Voltmeter and Ammeter Suitable for a Small Switchboard” in SA Supplements Vol. 47 No. 1215supp (April 1899), p ...

As you might expect, a common digital meter’s current scales aren’t usually up to measuring nano- or pico-amps. [Danny’s] approach was not to use the ammeter scale.

This tool combines a voltmeter, ammeter, and ohmmeter in one unit, either analog or digital. The one disadvantage of a multimeter is that the measured current draw is usually limited to 10-20 amps.