The 80 cm long ruler in square profile in plastic, filled with a lead rod is phthalate-free. The ruler has two different types of ruler edge design. The straight edge ruler can be used for pen and marker work, the edge used for marking work is provided with a marking edge where the edges are knurled to prevent the ink from spreading. The curve ruler is designed to move, measure and draw radii, curves and complex shapes. It is mainly used for hobby use, but it can also be used in, for example, architecture. The ruler is packaged in a transparent polypropylene case.