This International Standard specifies a method for determining the distortion of a fabric in which the weft threads are generally perpendicular to the warp threads.
EN ISO 13015:2013 Referenced Document
ISO 139:2005 Textiles - Standard atmospheres for conditioning and testing
EN ISO 13015:2013 history
2013EN ISO 13015:2013 Woven fabrics - Distortion - Determination of skew and bow