Johnson Level 40-6932 Two Second Theodolite, Orange Vertical axis compensation tilt sensor provides the highest level of accuracy and can be turned on or off depending on the job requirements Dual LCD with large characters easy to see angle readings eliminate errors and reduce eye fatigue Backlit LCD and telescope recitle-allows work in low light conditions including indoor and extended hours near dawn and dusk Simple six button keypad and large suite of programmable settings provide multiple operations for various users and job requirements including zero position of vertical angle 90 Degree audible notification for quick turning and set out of right angles also with instant conversion of vertical angles to percent of grade