Bosch GLM80 + R60 Laser Distance Measurers, 265'This tool can calculate the incline of drainpipes, soffits and rails, and is designed for professionals such as roofers, contactors, plumbers and electricians to boost productivity. Once the laser is locked in, it enters digital level mode for accurate angle measurements. On its own, the laser measure provides 1 16 In. accuracy at distances up to 265 Ft. It can calculate indirect length measurement for obstructed objects, evaluate the shortest and