
Specimen of sand showing the penetrating power of copper
- Made:
- 1860

Specimen of sand showing the penetrating power of copper, it has been used as a mould for gun casting at Woolwich, presented by A. Laird, 1860
Specimen of sand showing the penetrating power of copper, it has been used as a mould for gun casting at Woolwich, presented by A. Laird, 1860