And Mr Eightbored since you are taking sides and write that I'm absolutely wrong might I suggest you return to my posting and read it again sometime when your head is nice and clear? Also you might ask Mr Joe Wood which Galazan gauge he is referring to, the same question you put to me. For those following this subject the wall gauge most of us associate with Galazan is the heavy bench model with a spring loaded ball on each gauge rod that contacts and maintains pressure on inner wall. Barrels rest vertically on this set up and there is no chance that operator will spring the rods apart. Them that haven't used this Galazan gauge should not be making unsubstantiated comments on it and making them sound like fact. NE