I have two rulers that I couldn't live without. The first is the 8.5 x 24" Omnigrip and the second is the Easy Ruler Jr 3.5 x 9". I use the large one for all cutting and squaring up and the smaller one I use for trimming and the 45 degrees when needed. I do have about 20 different rulers, and have tried various ones, but, these two are my lifelines.