Field Rheostat

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A relatively small rheostat (resistance box) that is attached to switchboard S and is operated with wheel W. This particular model was used by General Electric Company and are generally attached to the back of the switchboard.

Source

International Correspondence Schools A Textbook on Electric Lighting and Railways (Scranton, PA: International Textbook Company, 1901)

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2746×2949, 2.6 MiB

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953×1024, 243.4 KiB

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Small GIF

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