Does any one out there in Ruby land know the thread pitch on the OUTSIDE of the steam dome bushing? It looks like it’s 14mm dia. I just don’t know the pitch.
I would like to reuse this dome on my bash but need to order a die so I can make a new busing for the new boiler.
Ah, a bit of research is always best. I looked them up on fee-bay to get an idea on pricing and saw there was either 1mm or 1.5, which made me think to my self, “hey self you could measure that with a rule” So that’s what I did. it’s 14-1 . Sorry for the dumb post.
No sweat. That’s why we are here. 
Always nice to see someone answer there own question. Later RJD