This ingenious ruler is four rulers in one package, easily snaping together to form a 6in 12in 18in or 24in length. Clear and accurate markings along with 30, 45 and 60 degree angle markings. You'll love it at home or on the go. It will be your perfect travel companion. All the pieces pack nicely in the felt bag enclosed in the package. For storage we recommend you snap the small end cap onto a larger piece so it does not get lost.