A MODEL OF A TWO CYLINDER COMPOUND, INVERTED VERTICAL, MARINE STEAM ENGINE WITH REVERSING GEAR, CIRCA 1880.

two cylinders 19 (HP) x 37 (LP) x 32 (bore and stroke/mm), cast iron and brass flywheel 76 x 19 (diameter and width of face/mm), slide valves operated by Stephenson's link motion from four eccentrics, two-throw crankshaft, four eccentrics, thrust block and disc wheel centre all turned from one piece, reversing gear operated by hand wheel through 'worn and wheel', oak base, 28cm x 20cm x 38cm, 23.5cm high overall.