4 1/2" ring gauge by Sir W.G. Armstrong Whitworth and Co. Ltd.
4 1/2" ring gauge by Sir W.G. Armstrong Whitworth and Co. Ltd., 1904
Details
- Category:
- Industrial Metrology
- Object Number:
- 1983-394/2
- Materials:
- steel (metal)
- Measurements:
-
8 x 16 cm
- type:
- ring gauge