If you want to get something straight, HART’s 2-pack 9” Torpedo Level is the way to go. Ideal for small and easy measurements, the torpedo is handy for leveling pictures and determining the slope of pipes and leveling over short distances. As the name implies, a torpedo level is tapered, or torpedo-shaped, making it ideal when working in tight spaces. Its compact size fits nicely in a tool belt and junk drawer. The magnetic edge allows for hands-free leveling and a top-read window is easier to read from a variety of angles. Typically, the more angles, the better as it makes the tool more versatile and can be used for a broader range of projects. It also has a V-groove edge that fits onto pipe and conduit. Includes (2) torpedo levels covered by a limited lifetime warranty.