ASTM D2644-81(1996)e1

1.1 These tolerances are applicable to all yarns spun on the woolen system and composed of any fiber or mixture of fibers, even though there might not be any wool present in the yarn.

Note 1-For tolerances for other spun yarns, see Tolerances D 738 and D 2645 and Specifications D 541 and D 681.