30 × 5 CM ruler is a handy size for patchwork and quilting.
Diagonal 30, 45 and 60 degree angles are marked
Clear acrylic with clear markings in black and yellow
Kearing 30 × 5 CM Patchwork Quilting Ruler
3mm thickness acrylic rigid plastic ruler.
For use with a rotary cutter for cutting strips and marking angles.