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Title: Rotary switch, self-cleaning, by Muirhead and Co. Ltd [Go to resource]
Description: Rotary switch, self-cleaning, by Muirhead and Co. Ltd License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: rotary Source: Science Museum Creator: Muirhead and Company Limited Identifier: 1989-1043 Go to resource More Like this...
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