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Have you lost the band from your yarn or made some handspun and want to check what gauge it is? These handy WPI tools have measures for common yarn gauges and their thicknesses, so you can check with a quick glance by laying your yarn over the lines to match the thicknesses. If you’re anything like me you’ll probably check the number of wraps around the inch ruler section, and then double-check the number of wraps with the thickness gauges! Measure twice, right?


WPI tools are laser cut from cast acrylic and hand painted.

  • 50mm x 110mm

  • handy hole for hanging loop - comes with a cord attached

  • Hand Painted

Wraps Per Inch (WPI) Tool