And you were correct, of course, Mr. Brimson. Just measured the Worrest TT and it’s dead on 8.25.
Overall we are talking almost single mm between sizes, so it is not an issue that some people measure things a little differently.
When put up, it went biggest to smallest, twin 8.5 and longer 8.5, 8.38, 8.5 blue eagle, twin 8.3, 8.25 grey eagle, twin 8.25, 8.125 black eagle, with the most minimal differences between some of them, but a little more noticeable to the eye more so than measuring them with a tape, ruler or whatever.
Also putting some of the same boards up like that there were some lots with almost no difference, eg 8.38 all same, but some others like the 8.25 had a bit more here or less there, having at least half a dozen, sometimes ten or more lined up together, so it is a funny one - different times, different runs, a bit more pressure on the sander here or there or who knows what, but overall, I think that when you find a board that works for you, then it is easier to stick to it, even with the concave differences, so I know I can get a more mellow board in an 8.38 and I will be happy, etc.