Safety lamp, Ashworth-Hepplewhite-Gray, Gray type, use: officials and gas testing, maker: J. Davis and Son, Derby, marking: Ashworth's patent Hepplewhite-Gray, 1892
Details
- Category:
- Mining & Ore Dressing
- Object Number:
- 1892-197
- type:
- safety lamps
- credit:
- John Davis and Son (Derby) Limited
