A well engineered model Stuart 10 twin cylinder vertical reversing marine engine with metal clad cylinders ¾in bore x ¾in stroke, inlet and exhaust manifolds, displacement lubricator, hand lever operated Stephenson's link reverse, three main bearings, worm and skew gear driven feed pump and disc flywheel, finished in green, red and polished brightwork -- 5¼ x 7½in (13.3 x 19cm).