Retro All-metal Vertical Steam Engine Model

Features:.Treated by CNC cutting and grinding and frosting color oxidation, the engine is made of aluminum alloy and brass for fast color. The first-class processing technology makes it become an artware with both texture and aesthetics, allowing you to experience the high-end mechanical model with superior performance..The steam boiler is made and processed by a solid aluminum alloy rod, with a single wall thickness of 3.5mm, for safety and firmness. Works in conjunction with a double alcohol lamp to provide steam continuously for about 45 minutes when once added water. Equipped with a safety valve on top to ensure safe operation..Suitable for mechanical model lovers, the product makes a science and education experiment instrument and a high-end model gift to others..HOW TO USE: Place the model on a horizontal table, unscrew the valve (water injection screw cover) on the boiler and add water. Notes that it can only be added to 2/3 of the capacity. Add alcohol to the lamp to 2/3 capac