Set of three measuring tools for trade or diy use the folding square measures 45deg amp 90deg angles with metric and imperial markings along one edge made of aluminium with pivots which click firmly into position can be folded flat after use the square ruler measure 300 x 500mm made of aluminium with vertical and horizontal vials the universal adjustable protractor measures 550mm with 0 70deg angles comes with metric markings along one edge made from aluminium and supplied with