Make perfect half triangle squares and quarter triangle squares in sizes up to 9- 1/2-inch with the help of this ruler. It"s made of heavy gauge acrylic and features 1/8-inch; 1/4-inch; 1/2-inch; and 1-inch lines; a 45 degree line; and is laser precise. This package contains one 9- 1/2 by 9-1/2-inch ruler. Made in USA.