With digital calipers you can take quick measurements of any number of things. Unfortunately, most digital calipers only display in metric and decimalized Imperial units — not fractions. That’s fine if you’re good at on-the-fly conversions, but what if you’re not? Several manufacturers offer digital calipers that’ll display fractions, for error-free measurements.
You can get these stainless steel calipers in 6″ and 12″ lengths. They’ll measure metric units with an accuracy of .01 mm or 5 thousands of an inch. They’ll display fractions of an inch as small as a 64th. You can get these fractional digital calipers from several sources, and no one seems to have an advantage over the others, so just go by price. They usually start around $30.