This is a mini Stirling engine model, with a length of 120MM, a width of 60MM, a height of 150MM, and a weight of 800G. It is assembled from many fine small parts. A cast brass flywheel is used on the main shaft, and the mounting base plate is made of solid wood we could see straight away that the working geometry was similar to that of the Rider-Ericsson engines that we often see, but that the mechanical configuration differed in that the flywheel was central of the engine as opposed to one side on the RE and the beam was yoke type to accommodate the flywheel. It uses gas as fuel. Its combustion chamber is equipped with a mini stove head and a furnace door designed for ignition. It uses water circulation cooling, and there is a mini water pump installed on the body. The water pipe is connected to a brass water tank.