Pam Damour The Decorating Diva 5 in 1 Ruler Pam damour 5 in 1 ruler Pam damour notions 5 in 1 ruler- this ruler has grooves in the back to hold .25Welt cord and .13Micro welt cord in place Use to trim a perfect .5Seam allowance In addition, it has 45 Degree line which go into the corner for perfectly mitered corners The 4x 8size is perfect for hemming custom draperies and marking pleats