I have a Mitutoyo set that I have been using for 5 years and thought there was none better out there. I ordered the Starret set for work and when it arrived I was impressed and I immediately began checking it out against the highest accuracy precission ground square and the square head and the protractor(set at 90) where dead on. This is a great tool! My only gripe is that it came in a cardboard box. Doesn't a great tool deserve a great case? I guess Starret doesn't think so and now I will spend a good couple of days building it a proper home. Come on... would a nice wooden box have added that much to the price?