French Curves are perfect for that shaping when drafting your Patterns. This set can be used for armholes, necklines, crotch, hip lines and sleeves. You can never go wrong with these Set Of Curves which includes, hip curve, leg curve, armhole curve and the most requested for, pattern master. very suitable for fabric reduction on the pattern before transferring to your main fabric. Its also use for art painting, etc. The scale is clear, durable, high accuracy, good flexibility. Widely used, suitable for drawing, cutting, plate and other clothing design.
The Pattern Master's main function is to provide a number of different curves so that you can create a range of lines and shapes to alter patterns to your requirements. It is particularly good for drawing in new curves. It's also has a ruler around the curved edge so you can measure curved lines.
The hip curve tool is used to create the soft curves on a pattern for making clothes. It allows the eye to shape from the waistline to the thigh area. It also allows consistency with all of your hip shapes. I also use part of the curve to shape the knee area of the pattern, and just above the hem.
The armhole curve is to shape your armhole while the leg curve is to shape your crotch.