Sigma Instruments thickness gauge
- Made:
- 1951 in Letchworth
Sigma Instruments thickness gauge, 1951 stored in a box and fitted with a inspection fitting for measuring screw thread acceptibility. Purchased from Plessey Records in 1951.
Details
- Category:
- Industrial Metrology
- Object Number:
- 1982-918
- Materials:
- steel and glass
- Measurements:
-
.8976 x 8.2677 in.; cm
- type:
- mechanical comparator
- credit:
- Gift of Nottingham City Museums & Galleries
