I thought I could save a few bucks on Craig's set, but I shouldn't have. They are every 0.020-0.010 inches from the correct (and marked) measurement. Check out the photos I've attached of my digital caliper measurements which register to within 0.0005 inches, that's all that matters, then just save your money and use a tape measure - it'll probably get you closer but if you want it accurate or maybe other measurements in your project consist of "Spitting Distance" or "oh-oh-so-very big" then you could save a few bucks buying a Kreg set and they buy.
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