Products / Wooden WPI Tool
Have an unidentified skein of yarn? Quickly find out its weight by using this Wraps Per Inch (WPI) Tool from Katrinkles. Just wrap the yarn over the 1" area, count the wraps, and compare to the industry standard WPIs conveniently engraved on the tool to determine if your yarn is a fingering, worsted, or maybe a bulky. Keep near your stash so you'll always be able to find a yarn for your next project.
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