James Cocker's patent decimal gauge (micrometer) from his original patent of 1857 no. 1680
- PART OF:
- decimal micrometer
- Made:
- earliest 1857
- modifier:
- Joseph Whitworth and Company Limited
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)
Details
- Category:
- Industrial Metrology
- Object Number:
- 1931-328/1
- Measurements:
-
10 x 14 x 25 cm
- type:
- micrometer
- credit:
- British Railways Board Records Office; London Midland & Scottish Railway Co.
