I'd measure it but I'm at work.
I usually make that mistake but as the metal is probably 2 mm thick each site so would have to be an outer diameter of 34.9mm 🙂 would have to mean that the seat tube is about 0.5 mm in thickness otherwise 😉
Incredibly unlikely, much more likely to be 34.9 or bigger.
What frame?
Depends on frame material.
36.9 on Specialized Stumpjumper Carbon HT - I don't think you can just guess. What bike is it?
2009 Marin Wolf Ridge. I did think 0.5mm was a bit thin but then I thought 2mm sounded too thick.
Depends on frame material.
Indeed, and with so few frames having a 0.45mm wall thickness, it's very unlikely to be 31.8.
If it's an alu Spesh it's definitely 34.9, if it's a Giant I'm pretty sure it's 34.9, if it's carbon then it's likely to be bigger, and a custom size.
Edit: it's only a wall thickness of 1mm, not 2mm.
I'm an idiot. The front mech is 34.9 and I'm pretty sure the seat tube isn't tapered.
ive got the same measurements on my heckler and its 34.9 seatpost clamp
Marin are 34.9 as well.
on the 2009 mount vision it's a 34.9 so your wool fridge should be aswell