are two Tailor's Designer Rulers. ONe is the Tailors Curve and one is the Designers Curve. Both are new old stock tailor's rulers and are still in the original packaging. The Tailor's Curve features seven rulers in one. For easy altering: inseam curve, hip curver, crotch curve, cut-out slot, 2 piece suit sleeve curve, lapel curve, and coat and jacket curve. It was "developed by leading pattern adjusting experts and used in leading American Universities". The Tailors Curve is used for all seams below the waist 2 piece suit sleeves, lapels coats and jackets. For all seams above the waist use one piece Designers Curve. The Designers Curve is six rulers in one. Both curves needed for professional use. Buyer pays $8.00 sh parcel post with delivery confirmation. Thank you.