A brass and steel experimental model twin oscillating cylinder center pillar rotative beam engine, with under floor mounted inclined oscillating cylinders approx 1in. bore x 1¾in. stroke, with bolted big ends, split crankshaft, disc cranks, three piece connecting rod to centrally mounted brass beam with rod driven water pump and three piece beam to counter shaft with disc cranks and twin spoked flywheels, further details include handrailed entablature mounted on six turned columns, wire rope driven governor and low level hand rail mounted on turned brass columns, finished in polished brightwork and red -- 12 x 13¾in. (30.5 x 35cm.). Wood plinth and glazed case