Size & Clarity: 2" x 18" transparent ruler; see project underneath for accurate positioning and marking Easy Reading Grid: 1/8" grid with inch marks; faster measuring for sewing, quilting, and crafting Precision Edges: 1/16" outer edge marks for fine detail work and seam allowance checks Centering Holes: 1/2" spaced holes for centering, alignment, and consistent spacing tasks Flexible Plastic: Clear, flexible construction; comfortable handling on fabric and patterns