Sew together 16 of these 22-1/2 degree triangles to create a complete circle; 8 to create a half-circle; or 4 to create a quarter-circle. Create Fans, Dresden Plates, etc. up to a finished size of 18 inches.
This ruler is used on the $2.50 pattern: Oval Dresden Table Topper, and can be used to make an oval sunflower. The ruler makes wedges ip to 9.5″.