I have a Mitutoyo Digital caliper, and have had it for a number of years. It has never let me down, and has been as accurate as a caliper is expected to be. [This one reads to .0005" or .01mm] I do not use it where I need absolute precision. For those chores, I use a conventional vernier micrometer.[Also Mitutoyo] I have no need to read to any value smaller than .0001". Regards, Eagleye.