The 25" - 9 Degree Circle Wedge Ruler create 25" fans and 50" circles. Instructions for over 20 designs. This ruler comes with complete instructions & yardage requirements for all 20 patterns. You can use it to create unique quilts, home decorations, place mats, table covers, tree skirts, and clothing. You can use graph paper to chart your own unique designs. This ruler is featured in the books: Round About Quilts, Quilts Without Corners, Jacket Jazz, Jacket Jazz Encore, and Contemporary Sampler of Fans.