The Sew Easy French Curve Ruler is an invaluable aid for designing, drafting and grading patterns, and adding seam allowance to block patterns.
This is a very versatile accessory for both the professional designer, the home dressmaker and the student. 
This ruler is great for altering your patterns for a more personal fit, tracing patterns, and has some easy to follow, comprehensive instructions inside.
The French curve is great for curves, necklines, armholes, sleeve caps, hipline, waistlines and hemlines.  

Measures: 53cm x 12cm.