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Title: frame micrometer [Go to resource]
Description: Frame micrometer made by Messrs. Troughton and Simms; vernier scales in metric and inches. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: micrometer Source: Science Museum Creator: Troughton & Simms Identifier: 1956-214 Go to resource More Like this...
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