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Title: Safety lamp, Ashworth-Hepplewhite Gray, Gray type, Stoke's a [Go to resource]
Description: Safety lamp, Ashworth-Hepplewhite Gray, Gray type, Stoke's alcohol tester, use: gas testing, maker: J. Davis and Son, Derby, marking: Stokes patent gas tester, 1901 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Creator: John Davis & Son Identifier: 1901-135 Go to resource More Like this...-
inscription, engraving, ASHWORTH'S PATENT. HEPPLEWHITE…inscription, engraving, ASHWORTH'S PATENT. HEPPLEWHITE…
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