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Title: Single-phase portable a [Go to resource]
Description: Single-phase portable a.c. and d.c. wattmeter, model 310 form 2 serial no.5622, by the Weston Electrical Instrument Corp., N.J., U.S.A., calibration certificate dated 1926 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Temporal: 1926 Source: Science Museum Creator: Weston Electrical Instrument Co. (maker) Identifier: 1987-433 Go to resource More Like this...-
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