Clocks: a Ferguson clock, face (right), and diagrams of the mechanism (left). Engraving by A. Bell.
- Reference:
- 40928i
Licence: Public Domain Mark
Credit: Clocks: a Ferguson clock, face (right), and diagrams of the mechanism (left). Engraving by A. Bell. Wellcome Collection. Source: Wellcome Collection.
![no text alternative](https://iiif.wellcomecollection.org/image/V0023842/full/800%2C/0/default.jpg)