Okay, 2 times 2 with the same problem. Can't tell what the good reviewers found, but in my kit the larger 7" square had a bulge on the inside edge of the blue anodized part (next to the stainless steel blade part) which made it wobble, but at least internally it relates to the Workpiece. 32 inches. I tested this on a confirmed straight edge (flat to 0.003 inch). The replacement kit had the exact same problem, plus the hypotenuse side wasn't straight either. Obviously, iGaging has some quality issues. Oh, if you call her "office" in California, a Chinese woman will just say "hello" and not even introduce herself. She just referred me back to Revane and didn't want to deal with it. And she seemed to be half asleep during normal working hours. It doesn't motivate me to do business with them. Too bad the product is really promising, or at least it was. Refund received.