The Straight Out of Line Ruler, by designer Karla Alexander. Use this 6" x 10" ruler to create the illusion of gentle curves in your four-patch blocks. Using the markings you're able to cut squares from 4" to 10". Equipped with Creative Grid's exclusive grip, this ruler slides easily on fabric yet stays in place when pressure is applied. Use the included instructions or scan the QR code to view a video demonstration. Made in the USA.