The Wilesco steam engine D6 features a highly polished and nickel-plated brass boiler, as well as an oscillating cylinder. The water level indicator is designed as a sight glass, allowing for constant monitoring of the water level during operation. The boiler capacity is 135 cm³ with a boiler size of 100 x 45 mm. The flywheel of this machine, with a diameter of 70 mm, ensures smooth operation. The attached dome steam whistle can be operated at any time during use via a special lever. Its lovely sound is reminiscent of Emma, the locomotive from "Jim Button and Luke the Engine Driver." When assembling the lever for the steam whistle of your D6, please ensure that the lever, made of black, heat-resistant plastic, points outward so that you can operate the lever during use without touching the boiler.