Unlike other instruments that use only AA battery, STT402L offers the options to use the li-ion rechargeable battery or standard AA battery
The dual axis compensator with 1” accuracy ensures reliable measurements on every kind of terrain
Large ergonomic keypad and the backlit LCD display with illuminated reticle
By pressing one key STT402L converts vertical angles to percent of grade, locks the horizontal angle, resets the horizontal angle to zero offering the possibility to reposition or repeat a measurement
 
Data Sheet