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LicenseWashers, 25mm outer dia
Science Museum Group
© The Board of Trustees of the Science Museum
Washers, 25mm outer dia. and 14mm inner diameter, sherardized by Cowper Coles on 14/7/27 using mica and talc additions.
Details
- Category:
- Metallurgy
- Object Number:
- 2002-143
- type:
- sherardized washers
- credit:
- Mr. Peter Cowper-Coles.
