Model of an independent type 'Cabinet' rotative beam engine, with self-supporting iron frame and cistern bed, made by Boulton, Watt & Co., and owned by James Watt, c1813, with tin container, for cigarettes, containing nineteen steel flat washers, fourteen slotted brass dome-head machine screws and an ‘L’ shaped flat piece of wood. Model, of an 'Independent' type beam engine by Boulton, Watt & Co., 1813 1812-1814
[Letter] 1805 Sept 14, Margaret St [to] Matthew Murray, engineer, Leeds/ Henry Maudslay, [discussing the arrangement of a stationary steam engine with 3ft stroke to be installed (in a private house?); a joint project with Murray whom he has just visited. Includes holograph technical drawing] Letter 1805 Sept 14 1805