This Susan Bates Knit Chek 6-In-1 Aid is so helpful! Use this handy tool to check your stitch and row gauge for both knitting and crochet. You can even use it to check that your picks are even when weaving! 

Have some needles or hooks that are not marked with their size? You can also verify the size of your needle or crochet hook from US 0; B-1 to P-16 (2.0mm to 11.5mm). Knit-Chek measures only 5-1/2x3in making it the perfect size for traveling or storing away with your other knitting or crochet necessities.