Our most popular sized ruler! 2.5 by 10 inch quilting ruler. Markings are every 1/8 inch, with a diagonal line at 45 degrees on either end for easy half square triangle trimming. This is a great size for trimming quilt binding! Laser cut and engraved from 1/8 inch acrylic. The markings are engraved so they'll never rub off. Non-slip dots provided with every ruler.