Gomaco GP3 four track paver with Topcon LPS robotic technology, including a millimeter GPS grading system and a Topcon total station, model GT-1001, with a one-second gun. The system communicates with Bluetooth wireless technology. This Topcon technology allows the machine to move more productively and with more accuracy. It's getting accurate readings from the robot down to a thousandth of an inch, which allows the road to be smoother and last longer.