Instructions for Using a WPI Gauge (Wraps Per Inch): A WPI gauge is a handy tool for determining the thickness of yarn. The measurement is based on how many times the yarn can be wrapped around a one-inch section without overlapping. The gauge can also be used by comparing the yarn to the thickness of the lines on the gauge. Here’s how to use the gauge: 1. Wrap the yarn tightly around the gauge's measurement area. Ensure that the wraps lie side by side without overlapping. 2. Count how many wraps fit within the one-inch area. This number is the yarn’s WPI (Wraps Per Inch). 3. Compare your WPI result with the following yarn thickness classifications: Lace: 18 WPI Sock: 14 WPI Sport: 12 WPI DK: 11 WPI Worsted: 9 WPI Aran: 8 WPI Bulky: 7 WPI Super Bulky: 5-6 WPI or fewer The WPI gauge helps you select the right yarn thickness for your knitting or crochet project. It’s a useful tool to ensure that the yarn matches your crafting needs.