ENJOMOR Plane Head Stirling Engine Pocket Free-piston Motor External Combustion Engine Model Toy

ENJOMOR Plane Head Stirling Engine Pocket Free-piston Motor External Combustion Engine Model ToyFeatures:Science Education Toys: This stirling engine external combustion model with novel design and equiped with cool propeller head. People will curious about the interesting and imaginative tabletop technology toy.Easy to Run: Just heat it up with an alcohol lamp and turn a propeller, and it runs steadily and quickly. You can observe the whole process of the engine.Excellent Manufacture: The main body of the engine is made of aluminum alloy, the surface is sandblasted, make it looks like gorgeous and not easy to rust and fade. Using thick quartz glass heating tube, strong and durable, can run for a long time, not easy to wear, more safe and reliable use.Widely Application:Its principle is a closed cycle reciprocating engine that causes gas to compress and expand periodically at different temperatures by external heating. It can be used as a good work for physics/mechanical teaching demon