If you don't use them for pry bars they stay square. Any how the old carpenters would punch them with a center punch to push or draw 90%.Or frame it and call it liberal square deal! Ron
'Life isn't about how to survive the storm, but how to dance in the rain!'
Well they will stay square if you don't step on them or stack your tools on them. The square above was 1/8" out "Obtuse" at 22". I had read some where about the center punch trick and it does work. Square is once again "square".
Phil
"They that can give up essential liberty to obtain a little temporary safety deserve neither safety nor liberty."