Hedley type mining dial by B. J. Hall and Co.
Hedley type mining dial by B. J. Hall and Co., c. 1920
Details
- Category:
- Surveying
- Object Number:
- 1922-43
- type:
- mining dial
- credit:
- Miscellaneous Disposals Syndicate
Hedley type mining dial by B. J. Hall and Co., c. 1920
