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Watch Key - Adjustable, Birch
Reg. No: ST 017986
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- Summary:
- Birch's key, cylindrical, fluted. Adjustable to fit different sized winding arbors.
- Description:
- PATENTED BY JOHN S. BIRCH. U. S. PATENTS 13:4:1869, 23:5:1876. MOSTLY USED BY WATCHMAKERS. KEY MADE BY MANY MAKERS WHEN PATENTS EXPIRED AND MOSTLY OF INFERIOR METAL. THIS IS EVIDENTLY ONE OF THE LATER EXAMPLES.
- Acquisition Information:
- Donation from Mr John Askew, 1929
| Discipline: | Technology |
| Dimensions: | 4.6 cm (Length) |
More information
| Tagged with: | watch accessories, watches |
| Themes this item is part of: | Horology Collection, Science & Measurement Collection |
| Primary Classification: | HOROLOGY |
| Secondary Classification: | Clock & Watch Making |
| Tertiary Classification: | tools & equipment |
Themes
This item is part of the following themes:
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