RTK (Real Time Kinematic) multi-band GNSS DK with cm accuracy. Base and rover kits. IP67 waterproof case.
SparkFun GPS-RTK-SMA Kit - Includes GPS breakout- Magnetic Mount Antenna- Ground Plate & USB-C Cable - u-Blox ZED-F9P & RTK- High precision accuracy in milimeters- Both Rover & Base station operations: Amazon.com:
Reach RTK Kit Multi-GNSS Accurate Positioning System - RobotShop