This International Standard specifies the minimum requirements for draughting media made from natural tracing paper. It details qualities necessary for draughting and reproduction, and specifies appropriate test methods for the most commonly used grammages within the range 40 g/m2 to 160 g/m2 i.e. 62,5 g/m2, 72,5 g/m2, 92,5 g/m2 and 112,5 g/m2.