The rulers feel good in the hand indicating a quality product. super accurate. Easy to read. I had it checked out by a mechanic (yes, those guys are hard to find these days) and he was impressed with the accuracy. I told him I paid for her; he almost cried. He said they were as accurate as his $500 caliper. The only thing that confuses me a bit is the stupid mustache logo, but I still only use the metric side. Why are we still using imperial US units?! Yes, buy these lines. You'll never want to use another one again!