One of the most accurate approaches for checking a case or other assembly for square is to compare the inside diagonal measurements for equidistance. The easiest way to do this is using pinch [...]
Web Site: ezwoodshop.com Blog: Make your own pinch rods. From the February 2016 issue, #233 “Pinch rods” or “pinch sticks” are, at their most basic, two thin pieces of pointy material that are [...]