So Jolly Bill you don't like the term dumb. Well when you pass up meaningful information that is down to the .001" for a crude test I do consider that dumb. When I buy a gun I have my own tools to measure anything I need to know. Information like that will prevent a lot of bad buys and more than a few surprises. To turn your back on highly accurate information for a wild ass, crude test is again dumb. If that makes me unPC I can live with that. Now if the buyer does not understand measurements and their meanings all he has to do is a little research or ask. Knowledge is king and to avoid it or ignore or not bother to find out what it means is not a very smart thing shall we say.