3 ms·

And cutting 3.93701 inches in thirds is somehow easier? Even with 4in, you end up with 1.33 inches. Not very different from 3.33cm is it? You're just taking ar

• mattkrause 6y ago
  But that's exactly the point--historically, you wouldn't cut 3.93701 inches. You don't have the precision to do it nor do you have any real reason not to stick with "round" numbers or close enough. Rough carpentry (e.g., framing a house) is often only accurate to a 1/2" or so; very fine furniture might go down to a 1/32rd. Note that machinists, who do want that sort of precision and can achieve it, mostly work in metric or metric-lite ('mils'=1/1000s of an inch).