Engineering Drawing - James Watt, Arrangement for Wanlockhead Engine & Steam Boiler, Sheet No.4, Jun 1785, Hand-coloured ink and watercolour drawing showing a general arrangement and cross-sections for an atmospheric condensing beam pumping engine and associated steam boiler designed by James Watt and supplied by the firm Bolton & Watt, of Birmingham, to the Margaret Mine, at Wanlockhead, Scotland, in 1785-86. Scale: 1/3 inch to 1 foot. The drawing is part of a set of technical drawings supplied by
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Engineering Drawing, James Watt, Arrangement, Wanlockhead Engine & Steam Boiler, Sheet No.4, Jun 1785, Hand-coloured ink, watercolour drawing showing, general arrangement, cross-sections, atmospheric condensing beam pumping engine, associated steam boiler designed, supplied, firm Bolton & Watt, Birmingham, Margaret Mine, Wanlockhead, Scotland, 1785-86, Scale, 1/3 inch, 1 foot, drawing, part, set, technical drawings supplied
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