I've moved three times in four years, but never quite mastered the art of hanging artwork. Move any frame in our home and you'd be likely to find no less than two sets of holes. Well, not any more. At 36", this level seemed like overkill (especially since most everything I hang is in the 8" x 10" realm), but now that I have one, I don't know how I ever got by without it. On either side of the three bubble levels are two 10-inch rulers with sliding "targets." Each target has a t-shape cut out, allowing you to mark exactly where you want the nail(s) to go. More or less fool-proof. It's also incredibly light and easy to maneuver, even with one hand. These days when we buy art, I don't dread the prospect of putting it up.