M-d smarttool digital level (in/ft), 92296, yellow, 120 cm smarttool electronic level all ready to go in a 2 foot long aluminum frame. This level can measure all angles in a 360 degree range. Installing a deck, stair rail, extending a roof, or determining how much an old floor has sagged is simpler and less time consuming. The display even flips over with the level, and it shuts off automatically after 5 minutes when it is not being used, all this from a standard, 9-volt battery. Features include angle accuracy to 1/10 of a degree, a mode button that lets you see angles in three different ways (degrees, percent slope, or pitch), and listen & level(tm) ideal for poorly lit areas. The smarttool allows hands-free operation as the audible tone alerts you when tool reaches level or plumb. Uses one 9-volt battery, not included.