I bought a 24" square ruller for just that reason. I sometimes have to cut blocks/strips over 6 1/2" and this ruler allows me to do that easily with out having to put 2 rulers together. I got it at Joann's with %off coupon so price was not too bad. Well worth the money Also I have a 12" square ruller that I think I bought as a set(always at joann's with % off coupon). I do not use my mat lines for accurate cutting.