Sewing ruler available in cm and inches.
The classic Jenerates Sewing Ruler - in centimetres or inches. Starts at zero at both the inside and outside corners so you can use it whichever way best lets you see your work. Cut-outs to make easy work of adding or subtracting a seam or hem allowance - great for hacking patterns! 
|   | 
Metric | 
Imperial | 
| Overall dimensions | 
10 x 10cm | 
4" x 4" | 
| Cut-outs | 
1cm, 1.5cm, 3cm | 
1/4" 1/2" 5/8" | 
| Hem allowance | 
3cm | 
1¼" | 
| Deep facing | 
7cm | 
2¾" | 
Made from 4mm thick cherry wood veneer
Hand finished with wax polish