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Description: One of four blued steel opticians eye-test lense holders, springloaded clips, without lenses, this one handheld, unsigned, United Kingdom, 1850-1920. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: trial frame Temporal: 1880-1940 Source: Science Museum Creator: Unknown maker Identifier: http://collectionsonline.nmsi.ac.uk/grab... Go to resource More Like this...
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