scope:

This standard is intended to facilitate the change· over by industry and commerce from traditional yarn numbering systems to the Tex System (CAN2-4.159-75).

It provides a range of recommended rounded linear densities in the Tex System to replace the yarn numbers in the six main traditional numbering sys· tems referred to in Table 3 and covers the great majority of yarns currently produced.

The rounded tex values for count systems not covered by Table 3 (e.g. Dewsbury count) may be ascertained by applying the principle on which the conversion table is based namely by using the relevant conversion factor from CAN2-4.159-75 to give the exact Tex System equivalents and then choosing a range of rounded numbers which are, as far as possible, not more than 2%different from the exact equivalents.