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3 1/2"plain ring gauges by Sir W.G. Armstrong Whitworth and Co. Ltd.
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3 1/2"plain ring gauges by Sir W.G. Armstrong Whitworth and Co. Ltd., 1904
Details
- Category:
- Industrial Metrology
- Object Number:
- 1983-394/1
- Materials:
- steel (metal)
- Measurements:
-
7 x 13 cm
- type:
- ring gauge