Subject: John Smeaton, FRS Catalogue of civil and mechanical engineering designs. Large prints. See wasc-0051 for list. See wai-0578 for small prints.
Description: No 39v: Design for connecting the water wheel axis with the tumbling shaft for Mr Walton's powder mill at WA. Plan and profile of the cross gudgeon and hoop for the water wheel axis. Section and plan of the cast iron box for the tumbling axis
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