Measure your gauge swatch with the 4 inch (10cm) ruler
Needle and hook sizes listed in metric, US, and Japanese standard sizes which allows easy conversion for any pattern
Use notches to determine the size of your crochet hook
Use the holes to determine the size of your knitting needle
Details: A multi-purpose tool for knitting and crochet. Get an accurate stitch gauge measurement with the 4" gauge ruler. Needle and hook sizing listed in Metric, US and Japanese's standard sizes.
