RH9340 Laser Distance Measurer 40mtrFully featured and powerful laser measurer features long range measuring with extreme accuracy up to 2mm and measures distances up to 40 meter(165 feet) for professional confidence Easy to read backlit color display illuminates numbers in dark areas with distinct resolution, allowing work in low light or no light conditions 180s of automatic shutdown for protecting the power IP67 waterproof level plus dust and fall proof function protect the laser