Driveshaft length tolerances +/-?

Righty Tighty said
Haha, I’m not exactly a mathematical whiz, but yes I’d say you’re pretty darn close!

BUT...this proves my point. Twenty thousandths can be like a mile, or twenty thou could not matter at all. See what I mean?

pretty sure most of us just use a tape measure. so a 1/4" off is probably not uncommon. i would want a 1/4" shorter. i'd rather loose a little spline engagement than have the yoke hammering the back of the trans