I was once upon a time many years ago a boatbuilder with a boatshop.
Y'see wood moves with moisture content, and age, and usage, and pollution, and finish, and eyeballih it crosseyed, not to mention throwing it into the ocean and askin it to cross the Atlantic
So you can specify a cut to a tenth of a thou if yer wants to, and maybe even cut to that -- why not?
It's just that........... it ain't going to stay that way.
Now the real slackers are the surveyors.
They tell me I have sixty seven acres, "plus or minus".
They don't even bother to say what.