Model requires no castings and
features semi rotary glandless valve

This actual working model of the classic Walking-Beam steam engine will delight the metal craftsman. Patented by James Watt, in 1784 as one of his innovations, the parallel link motion, functions in this miniature just as specified in his patent. This is a fun model to build, and will exercise your machining skills to boot. Both photos and precision drawings included in plans.
And, of course fully guaranteed.

Walking Beam Steam Engine
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