Sigma mechanical comparator
- Made:
- 1940-1950 in Letchworth
Sigma mechanical comparator fitted with a perspex cover to reveal workings and with the original instrument cover; complete with an inspection fitting on the instrument platform; dated 1940 to 1950.
Details
- Category:
- Industrial Metrology
- Object Number:
- 1973-404
- Materials:
- steel
- Measurements:
-
overall: 21.063 x 10.0394 x 8.0709 in.; 53.5 x 25.5 x 20.5 cm
- type:
- mechanical comparator
- credit:
- Herbert Controls & Instruments Ltd.
