Thanks, guys! Like mastrmind, I don't think I consider luming to be all that fun, but it is a whole lot more satisfying to say, "I did that!" instead of, "I spent $100 to have someone else do that!" Then again, you could just as easily trash a dial in the process--and believe me, it is VERY easy to mess up!
TeeJay, I don't know what nefarious plans you have for those dimensions, but maybe this will help you. The gridlines are 5mm apart: