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Title: Helios photo electric exposure meter [Go to resource]
Description: Helios photo electric exposure meter. Zeiss Ikon, c.1950. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: electric exposure meter Temporal: c.1950 Source: Science Museum Creator: Zeiss Ikon A.G. Identifier: 1979-559/2034 Go to resource More Like this...
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