- Item 74516 - Stanley Model D electric meter, 1898
- Contributed by Maine Historical Society
- Item 74516
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- *Credit line must read: Collections of Maine Historical Society
William Stanley, who started a company in Great Barrington, Massachusetts, developed this meter that was attempted to eliminate friction caused by the jewel bearings. The hollow steel shaft is mounted between two magnets, which are adjusted so that the disk "floats" between the magnets.Show Details