As the ball screw is advanced toward the table main body, the end of the ball screw pushes {HEAD ~ one side} of the table main body to swivel {TAIL ~ the table main body} in a first direction 
to swivel
As the ball screw is advanced toward the table main body , the end of the ball screw pushes { HEAD ~ one side } of the table main body to swivel { TAIL ~ the table main body } in a first direction
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH