The DEWALT DW088K 2-Way Self-Levelling Line Laser is accurate to & plusmn0.3mm/m in levelling applications. Self-levelling up to 4 surface angle with automatic out of level indication. It uses a simple 2 button operation with a low battery indication for ease of use. The built-in magnetic pivot bracket mounts easily on metal surfaces, whilst the overmoulded housing and thick glass protects the tool and helps maintain calibration under jobsite conditions. The included kit box helps to protect the unit and helps maintain calibration when stored in the gang box. Supplied with 1 x Wall Mount Bracket, 1 x Heavy-Duty Carry Case and 3 x AA Batteries. Specification Laser Class 2, Level Accuracy & plusmn0.3mm/m Self-Levelling Range 4 Visibility Indoor 15m (50m with Detector) Power 3 x AA batteries (supplied) Thread 1/4in Weight 0.46kg