Aluminum Arm

Early Steam Engine Display
This is a beautiful and substantial cut-away classroom display of a horizontal steam engine.
It has many working detailsincluding a working 2 ball governor, valve, crankshaft, linkage and flywheel.
There's a wonderful patina with most of the original paint highlighting all the important details.
It measures 15" long. All the castings are very heavy for it's size. This was no toy.