Save Fabric, Save Time, Save the Headaches with the Side Set Ruler. All Side and Corner Sets are cut from a strip width, instead of an over-cut square. The BEST way ever to turn your quilt on point! Instructions included-Pictures too! You will never again have problems with setting blocks on point with this ruler. Simply determine the size of your finished block and follow the line across the ruler to 'cut strip width'. Cut your strips, flip the ruler and cut your side set triangles.