A bronze, steel and cast iron model of a single cylinder Grasshopper beam engine built by P.E.B. Salvesen with brass bound mahogany lagged cylinder 1½in. bore x 3¼in. stroke, inlet manifold, studded stuffing boxes, strapped, gibbed and cottered piston rod bearing, barrelled connecting rod with marine type crank bearing, rod driven feed pump with compression dome, belt and gear driven Watt type governor, linkage and valve, lift-off eccentric rod and spoked flywheel, finished in green and polished brightwork, wooden floor and plinth -- 18¾ x 18¾in. (47.6 x 47.6cm.)