Gauge Swatch Ruler made by Katrinkles
These handy little crochet tools make measuring gauge quick and easy. Just place the square on top of your piece and count your stitches/rows in the box. There's nothing to it.
The inner box of this ruler measures 2 inches/5cm and is made from domestic cherry wood.
This amazing tool will fit perfectly in your notions bag.
These rulers are made in the US by Katrinkles