This House ruler is able to cut a wide variety of shapes such as half-square triangles, quarter-square triangles, trapezoids, parallelograms, diamonds from squares and rectangles. Accurately cut "house" shapes and "barn" shapes fast and easy. 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. Designed by Susan Knapp & Mary Jane Mattingly.