24 The width of the long and short arms is measured in inches, making it convenient for 24 construction. The white markings on a black background make the measurements and numbers easy to read. 610.00(407)51.002.30 806.00 g 60cm 57cm 40cm 35cm 60cm 57cm 40cm 35cm 2mm 100mm0.1mm 0.5mm Shape of CornerFlat SquarenessLess than 0.1 mm per 100 mm MaterialIron Use For all types of marking and measuring length Packaging Rafter Square: Bag Flat Square Vinyl package 610(407)512.3 mm / 806 g