O Scale - RRSP-O-27
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This is a vertical one piston steam engine. This guy would be just right for a small industry. The master for this castings came from our 3D printer. In the pictures you see a new painted model and an old dusty used one still working out in the back power shed. It would also make a good junk piece. The casting is not painted and is made of resin. The engine measures 1/2" by 5/8" at the base tall and 1 1/2" tall. Minor assembly required.