WPI Wraps Per Inch

Wraps per inch (WPI) measures the thickness of a yarn. This can be used by spinners, weavers, knitters, crocheters to measure gauge of yarn for their project. This guide also has lines on the back to measure your yarn against, including lace, fingering, sport, DK, worsted, bulky and super bulky. Measure; 3.5” tall 1.5” wide