The Worksman 900mm Aluminium Level Can Be Used To Check Whether A Surface Or Object Is Horisontal Or Vertical. Also Handy To Help Check If An Object Is 180 Degrees.**Features & Benefits:** Top Quality Aluminium And Ultra Lightweight Level For The Diy And Professional User.* 3x Level Vials For Horisontal Vertical & 45 Degree.* Rubber End Caps To Absorb Impact.