The SX series of total stations with high-accuracy robotic technology includes an advanced angle measurement system, RED-tech technology, reflectorless EDM, Bluetooth Class 1 long-range data communication, GPS, and an auto-tracking system with the RC-PR5 remote control. The compact robotic system delivers a 1000-ft working radius. Absolute encoders provide long-term reliability in adverse conditions. The dual-axis compensator ensures stable measurements, even when on uneven terrain. Sokkia Corp. 800-476-5542.