Cinematic 4K. Land levelling is a measure used in surface irrigation, such as basin and furrow irrigation. Tractor and laser farmland leveling control system. Field and land leveller. Land leveling machine. Aerial soil clay land earth territory ground construction build building foundation excavation site terrain smoothing out bad land water plane sea level slope gradient curve working machine plantation infield arable field reconstruction work laser measurement precision floor ground background backdrop groundwork stage land reclamation 3840×2160 2160p 50fps UHD 4K.