The Lietz DT6 is THE classic affordable electronic theodolite. The large LCD display allows simultaneous reading of both the horizontal and vertical angles to 20-seconds. In addition, the vertical angle can be set to be displayed as percent of slope! Horizontal angles can be read either left or right, and can be easily reset to zero at the touch of a button. Other features include rugged all-metal construction, a powerful 25x telescope with quality Sokkia optics, optical plummet, and illumination of the display for night or indoor readings. The lightweight battery pack provides up to 15 hours of continuos operation with AA alkaline batteries.