This Long-Range Laser Rangefinders are class 1 Eye Safe devices utilizing 1550 nanometers laser technology. These models are easy to use and withstand the harshest environmental conditions. The instrument has a comprehensive digital display and different range settings. A user can make First or Last target selection by pressing a button. The typical applications of these models are: topography and geodesy, military tasks, marine navigation, highway engineering, construction, airborne altimeters and locators, meteorology.