These handy dandy sock rulers from Knit Kits are perfect to throw in your sock project bag for on-the-go measuring. Unroll the silcone ruler, and insert inside the sock. One side of the ruler is marked with inches and centimeters, the other is marked with US women's and men's shoe sizes. The measurements shown on this side are for finished sock length, not actual foot length. (We usually subtract 10% of length to make a nice fitting sock!)
They roll up into a compact roll that easily fits into project bags, or even around skeins of yarn to keep them neat!
Available in four colors - green, white, blue, and pink.