I use vernier calipers in the shop nonstop every day. I prefer the 8" range because many of the parts I measure are larger than 6 but smaller than 8 so I can use a set of measuring tools instead of switching between 6" and 12" calipers . Extremely accurate, very easy to use and there's a reason the Mitutoyo is held in such respect. Yes they are a bit pricey but you get the quality you pay for.