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.
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