June Tailor 6-1/2-Inch Outer 3-1/2-Inch Inner Get Squared Ruler Square up 2 sizes of quilt blocks with 1 ruler using just a rotary cutter; no need to mark or trace 1/4 seam allowances on all sides-interior and exterior Teardrops allow for complete corner cut of interior square 45 degree markings to visually square block designs Also great for cutting border, photos and aligning scrapbook pages