This simple vertical engine was bought because it has an interesting cylinder; almost reminiscent of Model Dockyard.
The boiler is steel, 63mm diameter x 90mm high. It has a U tube sight glass, a dummy chimney, safety valve, whistle and filling plug. Steam is fed directly to the back of the port face of the single acting oscillating cylinder. The cylinder appears to be cast in lead or similar. It's outside diameter is 16.5mm, so it's bore is probably around 12mm. It's stroke is 16mm. The crankshaft has a simple crank at one end and a 64mm diameter spoked flywheel at the other, incorporating a 10mm diameter pulley.
As acquired, there were a few problems. The boiler is made of steel and is, unfortunately, already rusty. I will not, therefore, be steaming it but it works ok on air. The dummy chimney was missing. Lacking any information about it, I have fitted a short length of brass pipe for the time being. The whistle was broken off. It was made of cast lead so could not be repaired. It had been screwed into a bush which I don't think was original, so I have fitted a new bush with a 1/4" BSF thread to fit commonly available whistles. The crank shaft had been somewhat bent, probably due to having been dropped at some time. I have straightened it to not quite perfect but near enough.