Thomson Alternating Ammeter $31.99 USD Sold on: 2014-Jan-06 Marketplace: eBay ![]() 1 Treasure 0 Trash ![]() ![]() Old Thomson Alternating Ammeter Made by General Electric. the device was patented in 1901, 1903 and 1909. I do not have the original wooden box, but the ammeter itself makes a superb paperweight. The ... ![]() More Relevance Historical Items
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