GPS Land Leveling System Parts Display with RTK. Newly upgraded land leveler control system with accuracy of ±2cm, supports plane, bevel, double bevels, land survey and terrain data import. Single antenna(channel) or double antennas(channels) are optional. The system optimizes the product form, effectively reduces the space oppcupied by the product's body, and improves the overal stability of the system. It provides multiple leveling modes suitbaqle for different job requirements in different scenarios.