James Cocker's patent decimal gauge (micrometer) from his original patent of 1857 no. 1680
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.
