frame micrometer

Frame micrometer made by Messrs

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Frame micrometer made by Messrs
Science Museum Group
© The Board of Trustees of the Science Museum

Frame micrometer made by Messrs. Troughton and Simms; vernier scales in metric and inches.

Details

Category:
Industrial Metrology
Object Number:
1956-214
type:
micrometer
credit:
Board of Trade