With this ruler cutting hexagons of varying sizes is quick and easy. All the math is done for you. The Fons & Porter Hexagon Ruler is designed to cut finished hexagons from 2in to 6in tall. Simply cut a fabric strip, then cut the hexagons from the strip using the marked lines on the ruler that correspond to your finished size. Template measures 3-3/4in on each side, and 7-1/2 from angle to cross template angle. Easy to understand directions printed on the ruler.