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Title: Exposure meter, "Chum" trade mark, small plastic-cased meter [Go to resource]
Description: Exposure meter, "Chum" trade mark, small plastic-cased meter with needle dial. In leather case License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: exposure meter Source: Science Museum Identifier: 1984-5165 Go to resource More Like this...
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