The knitting needle gauge ruler is made from and flexible . The knitting needle measuring tool can tell you what gauge hook or needle you have. This sewing needle gauge measurement tool is useful for knitters or crocheters. This knitting needle measuring ruler is what you need to calibrates needle hook size to yarn size is printed on it. This knitting needle measuring tool is essential tool for knitting or crocheting. This knitting needle guage calibers with inch, cm, mm. This stitching needle measuring gauge can be used as a sweater pin or a sewing pin, and it can also be used as ordinary ruler. This knitting needle sizing gauge is easy to use and store. This needle gauge ruler is a great help in checking guage. Package includes: 1 Piece Knitting Gauge Ruler