AC Ammeter Lab-Grade Start Price USD 24.00 Current Price USD 64.53 Time Left - Bid Count 8 Buy It Now Price - Reserve Price - Start Time Saturday, September 06, 2008 End Time Saturday, September 13, 2008 Location Dunsmuir, California See more about 'AC Ammeter Lab-Grade' Description Thomson Alternating Current Ammeter, up to 120 Amp meter, made for scientific lab work by the General Electric Co. Patent dates: Apr. 2, 1901; July 14, 1903; June 1, 1909. Has a beautiful wooden base, no scratches. A little wear can be seen on the dome of the metal enclosure. Works as well now a hundred years later as from when it was made. The knob seen on the side of the wood case locks the needle in place when shipping. Bush button for conducting the test. Place a Bid!