This is the smallest and the latest Steam Engines in the Wilesco range with a mirror polished brass boiler, diameter 45 mm, length 90 mm and a boiler capacity of 50 cm³. The base plate and the boiler housing are made of printed sheet steel. The sight glasses are at the same time the water gauge glasses. Boiler has a spring loaded safety valve, oscillating cylinder and piston, a flywheel of 35 mm diameter and grooved pulley.
Base plate: 160 x 125mm