Mini Hot Air Mini Sterling Engine Model Steam Power Toy Physics Experiment Gift

Aerodynamics are rich in knowledge of physics, single cylinder combustion engine.
Engine principle is intuitive, educational toys, teaching experimental equipment can
effectively cultivate children's interest in learning can also be used for classroom
teaching, more intuitive and easy to understand.

Specifications:
Material:metal,glass
Color:gold
Size:165x87x95mm

Note:
-There will be the operation of steam,when the steam too much, the engine will stop working,
inside and outside the needle often set aside to reduce friction
-Do not rotate the nut too tightly, otherwise the glass is broken, if the piston is cracked,
can be bonded with glue.
-The alcohol lamp wick do not touch the glass, do not get too tight ring
-Pulling the piston connecting rod can not force the front end, because the front
end is easy to break