Originally Posted by
Frkl
The aluminum 3Ts I have had, have been 26. The steel ones (Chromix and Chromix Plus) were 25.4. although with steel it doesn't matter so much.
I would bet 26. But the only way to really tell is to have a known and measured 25.4 and a known and measured 26 bar on hand to test.
Sorry, i just switched ITM and 3T in my brain. Disregard what I said since it is obviously not directly relevant.