This is the first accurate gauge which is designed for both needle and hooks!Current knitting needle gauges are wildly inaccurate when measuring crochet hooks, this gauge does both and is small enough to easily fit into your notions bag.NZ Made and designed by renown crochet designer Sofia Moers-Kennedy, Skeinz is proud to be able to offer Dual Gauge.Our Gauges are wooden with the Skeinz Logo (The hook in the image is not part of the purchase)