Sangamo Type H electric meter, 1911
Contributed by Maine Historical Society
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This model had been in development for some time before its introduction in 1911, but Sangamo had to wait for the Tesla patents, owned by Westinghouse, to expire.
This induction-type meter uses fluctuations in magnetic fields to turn the rotating disk, while a drag, or lag, magnet keeps the disk turning at a rate proportional to the current.
- Title: Sangamo Type H electric meter, 1911
- Creator: Sangamo Electric Co.
- Creation Date: 1911
- Subject Date: circa 1911
- Media: Metal, glass
- Local Code: 2004.090.1453
- Collection: Central Maine Power Company collection
- Object Type: Physical Object
For more information about this item, contact:
Maine Historical Society
485 Congress Street, Portland, ME 04101
(207) 774-1822 x219
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