This 18 degree circle template ruler cuts 20-petal round or pointed dresden plates or fans up to 16-1/2in across from strips of fabric. Includes 3 inches finished circle for centers and curved edges. The Quilt Ruler Non Slip allows sewing 5 segments together to create round or pointed fans. Cut up to 8-1/2 inch petals to create dresden plates to 16-1/2 inches with the quilting ruler. This quilting ruler from Creative Grids is made in the USA and comes with clear and illustrated Step-by-Step Instructions.