Engineering Drawing - James Watt, Detail of Components for Wanlockhead Engine, Sheet No.7, 1785, Hand-coloured ink and watercolour drawing showing elevations, cross-sections and plan views of several key components of an atmospheric condensing beam pumping engine designed by James Watt and supplied by the firm Bolton & Watt, of Birmingham, to the Margaret Mine, at Wanlockhead, Scotland, in 1785-86. Scale: 1/4 inch to 1 inch. Undated, but likely 1785. The drawing is part of a set of technical
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Engineering Drawing, James Watt, Detail, Components, Wanlockhead Engine, Sheet No.7, 1785, Hand-coloured ink, watercolour drawing showing elevations, cross-sections, plan views, several key components, atmospheric condensing beam pumping engine designed, supplied, firm Bolton & Watt, Birmingham, Margaret Mine, Wanlockhead, Scotland, 1785-86, Scale, 1/4 inch, 1 inch, Undated, drawing, part, set, technical
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