scope:

1.1 This test method covers the measurement of distortion of filling yarns in woven fabrics and courses in knitted fabrics from the normal path perpendicular to the fabric length.

Note 1-For other references on imperfections refer to Fed. Std. No. 4b, Glossary of Fabric Imperfections; MIL STD 1491, Glossary of Knitting Imperfections; or MIL STD 655, Provisions for Evaluating Quality of Cloth, Wool and Wool Blends. Note 2-Other methods for the measurement of fabric construction characteristics include the following: D3773 Test Methods for Length of Woven Fabric D3774 Test Methods for Width of Woven Fabric D3775 Test Method for Fabric Count of Woven Fabric D3776 Test Methods for Mass per Unit Area (Weight) of Woven Fabric D3883 Test Method for Yarn Crimp or Yarn Takeup in Woven Fabrics

1.2 This test method can also be used to measure the distortion of printed geometric designs such as plaids.

1.3 This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.