Quilting Tools for No Math Quilting, Accurate 1/4" Seam Allowance. Non slip quilting ruler with Fabric Guide. Guidelines4Quilting designs and manufactures quilt tools for accurate piecing and cutting. Our Finished Size Quilting system lets you make quilt blocks any size with no math, dies, patterns or templates, using Guidelines Ruler: non-slip, connectable and unbreakable quilt ruler with adjustable fabric guides, Seam Allowance Additions that automatically add seam allowances for squares & triangles and the Prep-Tool: a point trimmer and scant quarter inch tool. Our offerings also include tools for regular acrylic rulers: Quilt Ruler Connector, Grip Strips for quilt rulers and Finger Guards that protect your fingers while rotary cutting.