I have been trying to get two boards to be 10’7.5" apart (measured from the outside edges). And was having a hell of a time with the distance measuring wrong over and over again. So I finally built in a measured line and just snapped the second board to it, but when I went to measure this again it was still off (depending on where and how I measure it).
Everything is snapped together, and it does not matter how much I zoom in, this is single continuous lines. but measuring it with the tape measure I get one 16th too many.
What is going on?