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LicenseTwo washers, 25mm x 15mm inner diameter
Science Museum Group
© The Board of Trustees of the Science Museum
Two washers, 25mm x 15mm inner diameter, sherardized by Cowper Coles in the 1920s.
Details
- Category:
- Metallurgy
- Object Number:
- 2002-189
- Materials:
- steel (metal) and zinc (metal)
- Measurements:
-
: x .9843 in.; x 25 mm
- type:
- two sherardized washers
- credit:
- Mr. Peter Cowper-Coles.
