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Description: | James Cocker's patent decimal gauge (micrometer) from his original patent of 1857 no. 1680, modified by Messrs. Joseph Whitworth and Co. to gauge 0 to 2 inches reading to thousandths of an inch (Whitworth Works no. 119) | License: | http://creativecommons.org/licenses/by-nc-sa/2.5/ | Subjects: | micrometer | Temporal: | earliest 1857 | Source: | Science Museum | Creator: | Joseph Whitworth and Co., Messrs (modifier) | Identifier: | 1931-328 | Go to resource |
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chart
Chart showing decimal equivilents of…
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