Thanks. Any idea what gauge it is and if he steams it?
The Stirling Single if 3/4" scale, 3-1/2" gauge. Runs great on air but has a small leak in the firebox which I have not addressed yet. Construction is attributed to Bassett Lowke, probably in the 1930's. Says Bassett Lowke on the pressure gauge, and reportedly came from the old Steam Age shop in London.