Machinery used in the comparative testing of gold. Engraving by Mutlow.
- Reference:
- 36496i
Licence: Public Domain Mark
Credit: Machinery used in the comparative testing of gold. Engraving by Mutlow. Wellcome Collection. Source: Wellcome Collection.
Licence: Public Domain Mark
Credit: Machinery used in the comparative testing of gold. Engraving by Mutlow. Wellcome Collection. Source: Wellcome Collection.