Calipers are as you would expect from Mitutoyo. I've used them fairly extensively in various environments. They spent a good time surrounded by sawdust and to this day they are still super smooth and without issue.The way it remembers zero is also really useful, even if you switch them on after you open the jaws it can still tell you how far it's moved so you don't need to re-zero.I've not had them calibrated for a while so couldn't say how far they've run out but all my holes are still lining up whether I use a ruler or these to mark them up so I'd say they're fairly good.Overall I'd recommend them if you looking for a long term measuring companion. Just don't lend them out, otherwise you'll never see them again!