Built with the tradesman in mind, the OX Pro Series Tuff Levels are designed to take a beating. The aluminum body of the level is one solid piece, without handles or room for cement, mud, and other debris to get clogged. The level includes three vials, one for level, two for plumb. The vials consistently provide an accuracy of 0. 005"/ 1" or . 5mm/ m and are protected by structural reinforcement within the level. On each end of the body there are rubber end caps to protect the level from bumps, drops, and excess damage. The top and bottom of the level are both milled surfaces giving it a perfectly at edge and ensuring increased accuracy compared to a coated surface.