Magnetizes or demagnetizes meters, small parts, tools, tweezers, screwdrivers and steel rulers quickly and completely.
To demagnetize, simply hold object in the center of the opening with button depressed for 3 or 4 seconds. Slowly withdraw object in a straight line and release button.
To magnetize, hold the part or tool against the inside of the opening and press the button for 4 or 5 seconds and release.
Opening measures 3" x 1-1/2" (76 x 38 mm)