Look at that first measurement: there's an extra zero: 0.065. That's what you're looking for, something under a 10th of an inch thick. I was going to say that the same wall thickness applied to the 2d and 3d tubes, too, but i started looking up some suppliers, and their wall thicknesses were quite a bit less. And 1.5 was "nominal," actual 1.9. So, I got even more confused.
Advice at this point: Call B&B. They answer their phone.
I got a tube from the local supplier and they didn't bat an eyelash when I gave them the spec from B&B. Whatever it was, it was standard stuff.
Fun fotos, by the way.