Curve Master Presser Foot by Martelli

This foot makes stitching curves easy without the need for pins or a glue pen. This foot can also works great as a quarter inch foot to stitch straight seams. 
 
The foot directly clips on to Viking, Husqvarna, Janome, New Home, Elna, Baby Lock, Necchi, White, and other machines. The foot includes adapters for Low Shank, Bernina, Pfaff, Singer Featherweight, Singer Quantum, Singer Slant Needle, High Shank Brother, Super High Shank Kenmore, Brother 1300, 1500, and Juki 98 machines.