Taps and dies for cutting screw threads, and a water-tight window: cross-sections, and details. Engraving by J. Cleghorn after C. Varley.
- Cornelius Varley
- Reference:
- 41239i
Licence: Public Domain Mark
Credit: Taps and dies for cutting screw threads, and a water-tight window: cross-sections, and details. Engraving by J. Cleghorn after C. Varley. Wellcome Collection. Source: Wellcome Collection.
