Early example of a Sigma mechanical comparator
- Made:
- circa 1940 in Letchworth
Early example of a Sigma mechanical comparator with workings visible. Made 1945-1955
Details
- Category:
- Industrial Metrology
- Object Number:
- 1993-1532
- Materials:
- steel
- Measurements:
-
overall: 23.622 x 7.874 x 9.0551 in.; 60 x 20 x 23 cm
- type:
- mechanical comparator
- credit:
- Royal Military College of Science
