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Title: Carruthers current meter MkI, patent no 737816, no 121 [Go to resource]
Description: Carruthers current meter MkI, patent no 737816, no 121. Made by Kelvin & Hughes Ltd. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Creator: Kelvin & Hughes Ltd. Identifier: 1990-785 Go to resource More Like this...
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