Spectra Precision DET-2 Digital Electronic Theodolite, Construction Surveying Equipment Set, Rechargeable and Alkaline Batteries, Carry Case

2 second angular accuracy is precise enough for any construction job, yet operator can select display resolution of 1 or 5 seconds to match operator preference for fast readings. Vertical axis compensation and tilt sensor provides the highest level of accuracy and can be turned on or off depending on job requirements.. Dual backlit LCD displays with extra large characters provide easy to see angle readings, eliminate errors, and reduce eye fatigue. Programmable settings provide multiple options for job requirements, including settings for horizontal angle resolution, 90 degree angle beep, vertical degrees or percentage, and more. 6-button keypad allows for quick setups and easy operation with low operator learning curve; Has a built-in reticule illuminator for working indoors and in other environments with low light