Screw 120mm long
- Made:
- 1920-1929
- maker:
- Sherard Osborn Cowper-Coles
Screw 120mm long, sherardized by Cowper Coles in the 1920s.
Details
- Category:
- Metallurgy
- Object Number:
- 2002-176
- Materials:
- steel (metal) and zinc (metal)
- Measurements:
-
: 4.7244 in.; 120 mm
- type:
- sherardized drill bit
- credit:
- Mr. Peter Cowper-Coles.