convayor and auger drivee through variable displacement hydaulic pump and fixed motor for adjusting the feed to desired level.proportional hydraulic feeding system for stepless feeding control, is an optional extra.State of the art imported ensing device for accuracy leval of plus or minus 1 mm in grade control and plus or minus 1 mm in grade control and plus or minus 0.1 % in slope control. ultra sonic contact less grade control is an optional to match any intrnational standards.