vcballbat
Senior Retro Guru
Found this mentioned shims were used. ..Of course, yes. I was having a bit of a senior moment there!
The tube is incredibly fine; I’ve never seen a seat tube as thin as that before. To be honest I think my down tube was slightly thicker on the ends than that so was possibly butted after all then.
Post in thread 'Raleigh/Dynatech Torus seat post diameter?' https://www.retrobike.co.uk/threads/raleigh-dynatech-torus-seat-post-diameter.378697/post-2811910
On this frame for sale on Hillary's site says it's plain gauge throughout.