Continuing the discussion from Intro to measuring tools:
Good vernier calipers are probably as accurate as the cheap digital ones, with some of the LCD digits just being fake accuracy. I would loved to have seen an introduction to vernier scales here, but thankfully we have Wikipedia.
It’s funny, we all three seem to have the exact same brand of cheap digital calipers - I’m from Germany - and I hate it when it’s out of battery power when I need it. Must be the one-size-fits-all global consumer model, brought about by people assuming that digital is always better, even if it isn’t.