Okay, total lame-o question here:
Gotta measure a room for crown molding. I know enough to bet that wall-to-wall distance at ground level is not likely to apply to ceiling level. So I should do my measuring up where the wall hits the ceiling to determine proper cut length for the molding. Problem is, the stupid tape measure sags and kinks and falls before it reaches the opposing wall. Darn frustrating when atop a ladder.
So -- how do you smart guys do it?