I’m thinking about picking up a Stanly 36-1/2 folding rule/caliper. My most used rule is my steel 6”, followed by my 12”, and lastly my tape measure. I also have a brass caliper that I whip out occasionally. I feel like the 36-1/2 would kill a lot of birds with one stone (all but the tape measure), and it would be fun at the same time.
BUT…. How accurate are these old Stanley folding rules? I’ve never used one before. I assume the markings are perfectly accurate, but I wonder about the thickness of the rule playing a role in accurately placing a knife or pencil as you sight over the edge. Most of the time I just need a ballpark measurement, but sometimes I need things to be pretty accurate.