Made from cherry veneer this square ruler is small but nifty, long enough to give you a square edge. Starting at zero at both inside and outside corners, with 5/8th seam allowance markers on everyside, along with 1/2",1/4" and 5/8th cut outs to ,ake it easy yo add seam allowance to your pattern.
Also fits perfectly inside 4"x4" box on an imperial pdf pattern.
How can you live without it? perfect gift for a sewing friend.