Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

A fantastic super rare Plank in excellent condition with riveted boiler, congratulations Jim. Please allow me to suggest a professional restoration by Brent (Parallelmotion).
Walter, I believe the spring loaded pressure gauge also works as a safety valve.
I will share picture later or Jim can take a picture of his pressure gauge stem showing the spring.

Thanks for that nice bit of information Mike; now that I look closely at Jim’s photos I can see the relief hole in the Manometer stem.
Cheers also Nick.