Stirling Generator, Fully-assembled. Dimensions: 7L x 3.5W x 3.5H inch. Includes spare cylinders (1 each), crankshaft pin, cylinder o-ring, and allen wrenches for removing damaged cylinders. Alcohol not included. Features a secured fuel source in a recessed well on wooden base.
Planetary Gear Demonstrator, Size: 24cm x 14cm x 14cm, for explaining the principle of a planetary gear. By setting the internal sun and pinion gears into motion, Class Pack of 10