Clocks: faces (top), and mechanisms (below) of a Ferguson (right), and a Smeaton-Franklin clock (left). Coloured engraving by J. Pass, 1809.
- Date:
- 1 January 1810
- Reference:
- 40892i
Licence: Public Domain Mark
Credit: Clocks: faces (top), and mechanisms (below) of a Ferguson (right), and a Smeaton-Franklin clock (left). Coloured engraving by J. Pass, 1809. Wellcome Collection. Source: Wellcome Collection.
