Wrights 6-1/2-Inch-by-24-Inch Easy Rule II
Easy Rule II is a clear acrylic ruler made for precise measuring.  This ruler can reach across the entire width of folded fabric.  Features 1/4 inch seam allowance marked on all 4 sides at 3/8, 5/8, and 7/8 inch intervals in large easy to read numbers and letters.  Also marked with 45 and 60 degree angles. Great for borders.  Ruler measures:  6.5 by 24 inches.