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Title: Five screws, 37 mm long, sherardized by Cowper Coles in the [Go to resource]
Description: Five screws, 37 mm long, sherardized by Cowper Coles in the 1920s using a mixture of half and half Zn dust and pumice, plus 1% resin. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: Five sherardized screws. Temporal: 1920s Source: Science Museum Creator: Cowper Coles, Sherard Identifier: 2002-160 Go to resource More Like this...
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