OK all you mechanical types, heres a cool tool! Mitutoyo backlit Digital Indicator. Also has a Mitutoyo 7004 stand. The indicator was just checked out and calibrated by local metrology house here in PDX 4/12. New these are $600 for Indicator/$400 for Stand. So I'm thinking trade value would be $500 OBO Looking for AR 15 223 upper Nice 10/22 +cash ???