Twist Measurement in Yarn June 7, 2015 Md Sohanur Rahman Sobuj 12.40K Fabric Engineering The most obvious way to measure the number of twists per unit length of yarn is simply to untwist a known length of the yarn and check visually to see whether the twist has been completely removed. Read more Commercial Jeans Brands: A Deep Dive into Gap, Wrangler, H&M, and Zara