KnitPro Round View Sizer is a handy and convenient tool for identifying needle sizes in a compact circular shape.
Metric sizes (mm): 2, 2.25, 2.5, 2.75, 3, 3.25, 3.5, 3.75, 4, 4.5, 5, 5.5, 6, 6.5, 7, 8, 9, 10, 12
US Sizes: 0, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10, 10.5, 10.75, 11, 13, 15, 17