Corner ruler available in cm and inches.

For drafting rounded corners on pockets, bags, shirt tails etc. The corners are 2,3,4 and 5cm radius on the outer edge. The width of the ruler is 1.5cm or 5/8" so you can draft your seam allowance at the same time. There's a silicone hemmer exactly the same shape, and a deal if you want to buy them both together.

Overall dimensions: Metric 10x10cm, imperial 4"x4"
Designed and made in Scotland from 4mm thick cherry wood veneer