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Fort Wayne-Duncan ampere-hour meter, 1895

Fort Wayne-Duncan ampere-hour meter, 1895

Item 74515 zoom send e-card Share this on Facebook Share this on Twitter

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Description

Developed by Thomas Duncan for alternating current arc-lamp systems, this meter measures the number of amperes consumed by a series of 10 lamps over time. Companies supplying electric power sought a meter that would accurately record all types of usage.

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