Ann Budd Knits Gauge Ruler

The Handy Gauge Ruler by Ann Budd Knits is a clear plastic 9 inch ruler that has markings of knit stitches in both white (for measuring dark colored yarns) and black (for measuring light colored yarns). The ruler measures eleven different gauges from 4 stitches per inch to 9 stitches per inch in .5 sts/inch increments.

Simply move the ruler across the knitting until your gauge matches your stitches.