Fons and Porter Half and Quarter Ruler, Pack of 1 This easy to use ruler takes the math out of cutting half-square and quarter-square triangles It lets you cut both types of triangles from strips rather than by cutting squares diagonally into triangles This is a special ruler for scrap quilts because you use strips of even-inch or half-inch widths Ruler features an acrylic construction with easy to follow black and yellow markings Cut perfect triangle from strips measuring 1-inch to 5-inch in width