https://www.tznapot.com/product/pipe-plumbing-tool-1/battery-pipe-plumbing-tool/ A fabrication shop lines up a batch of pipes meant to be cut to the exact same length, and by the time the last one comes off the saw, several are noticeably off — a few millimeters short here, a slightly angled edge there, small variations that seemed insignificant one cut at a time but add up into a batch...