I have more of an issue with that minuscule 'wow' along the edge of a ruler, that develops over time and use. I hate throwing out rulers but found I could no longer trust my 6x24 inch ruler to actually measure 6 inches all the way along. I finally decided to relegate that ruler to the 'helper' role--for when I need something like 10 inches wide by 20 inches long. I use my newer and more accurate 8.5x24 ruler to actually make the cut, but line up the old ruler beside it to achieve the 10 inch width.