This square with a lot of advantages to it, practice, choice of various angles, tracing parallel lines, except that .... I wish I had a perfect squaring of the sides 2 and this is not the case .. it took me quite time to understand that my failures were not my responsibility! but the bad manufacturing the plastic black piece that makes basic office! short 2mm left 50cm is not serious! The graduations were quickly erased from one side of this square because they are simply painted and a little acetone is encountered (normal in a workshop). I wish graduations starting from the heel of the square, this is not the case yet it would have been possible and very practical. In short, very disappointed in the quality, though it was a good idea but copy that thing again!
