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Title: Record induction wattmeter, 1957 [Go to resource]
Description: Record induction wattmeter, 1957. 0.250 watts, 1 amp, single phase. 6" dial, Cirscale type License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Identifier: 1967-86 Go to resource More Like this...
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