Laser cut and engraved out of 3mm thick birch plywood, this helpful wraps per inch gauge enables you to measure the thickness of your yarn. It also has engraved lines to show the approximate thickness of various types of yarn. Please be aware that these are not intended to be grooves/channels, simply lines for you to lay your yarn across as pictured.
It is approximately 80mm high by 80mm wide, and has a small hole in the top corner so it can be stored on a ribbon or ring.