I have a Mitutoyo 513-242 that is out of production but at least 25 years old. It still works great. There is no hysteresis at all. That's the most important thing for me. It's easy to read 0.00025 and I believe it. I bought a new 513-402 as a backup and left the old one on the lathe. The new one has a slightly shorter case and stylus, and the dial is easier to adjust, but otherwise the same quality. I also have Starrett Last Word, but I only use it in hard-to-reach places. Mitutoyo is my way.