Shop Grainger for a huge selection of box, I beam and torpedo levels to help you make sure everything is straight and plumb. Used by carpenters, electricians, plumbers, machinists and many more tradesmen and professionals, levels help to ensure that a surface or angle is level or properly plumbed. They are used for everything from hanging pictures to aligning joints in a building project. Choose from a variety of level types, including laser and magnetic levels, and a wide range of sizes, from the small 4"L torpedo level you can slip into your pocket to the 48"L electronic digital box level and the 96"L construction grade I beam level. When you need highly accurate and durable box, I beam and torpedo levels, check out the many choices at Grainger.