I try not to measure (in numbers) any more than I absolutely have to. Whenever possible, and it usually is, I use one piece to set up the tool for the other piece. Hard to explain but it’s how I learned in shipyards years ago. “Measure from the work”, “story stick” …. there are as many names as techniques but the bottom line is why introduce another source of error? In the simplest case, if you have a board and want to cut another the same width, don’t measure it. Put it in the saw and set the saw to its edge. Then cut your second piece.

This isn’t really about precision cutting, it’s more a way of going about woodworking in general I guess.

The early bird gets the worm but its the second mouse that gets the cheese.