The Stanley 43-512 Lighted Shock resistant Torpedo Level has a rigid aluminum frame with unibody rubber construction for ensured accuracy and durability. Lighted vials with automatic shut-off allow work in dark and low-light environments without the use of a flashlight. The level features 3 vials; the center vial has an open, top-read design to provide maximum readability and is also insulated to resist shock. The level has a V-groove edge for accurate readings during pipe, conduit, and rounded surface work. A magnetic edge gives you hands-free operation on metal surfaces. Shock resistant rubber ends protect both the level and the working surface; the level"s non-marring feet can be used on finished surfaces without damage. This level is water resistant, making it ideal for use in wet or humid conditions. It measures 9 inches in length and is backed by a lifetime limited warranty.