This level is used for levelling on a wide range of surfaces. It has top and bottom working surfaces with a die casting aluminium alloy frame. It also has transverse and longitudinal vials which are shock-proof and UV-proof vials. Top and bottom working surfaces. Shockproof and UK-proof vials. Die casting aluminium alloy frame. Zero position of horizontal vial can be set. One graduation of horizontal vial is 2% slope. Working temperature: -15C to 55C