Screw jacks are put on the seat pads and adjusted to the same height using a leveling instrument. Then the screw jacks shall be fixed tightly and their positions recorded.
按图纸标高，用水准仪校准到统一高度，按位置记录并收紧螺纹千斤顶。
2
The hand guard helps with screw stabilization, houses a stud finder and a laser guide to project plum lines and assist with leveling.
The basic principle is though three root ball screw control platform, by the measurement of nozzle, three motor to adjustable height accordingly, easily implemented leveling!