A well engineered small scale model of Crosskill's single oscillating cylinder stationary engine of circa 1860 built by A. Mount with inlet and exhaust steamways, overmounted crankshaft with entablature supported on four turned, tapered columns and spoked flywheel, on circular bed and mahogany plinth, finished in green and polished brightwork -- 5¼ x 3¾in. (13.3 x 9.5cm.)