1.1 This standard defines the various count systems and provides factors and formulae for inter-conversion of yarn counts. Tables for inter-conversion of values in traditional count systems and Tex System are also included in this standard.
1.2 The procedure for obtaining rounded values of tex based on ISO/R 271-1962 ' Implementation of Tex System for designating the size of textile fibres, yarns and similar structures ' has been given in Appendices A and B.