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Badpuppy · 02-11-2019, 01:09 PM

The pointer is held at the zero mark by a magnet behind the dial. Current through the brass plate between them disturbs the magnetic field and deflects the needle accordingly.

02-11-2019, 01:09 PM	#15
Badpuppy Senior Member Join Date: Dec 2017 Location: Guthrie, OK Posts: 1,145	Re: Ammeter The pointer is held at the zero mark by a magnet behind the dial. Current through the brass plate between them disturbs the magnetic field and deflects the needle accordingly.