{TAIL ~ A system} to measure the installation torque of a screw pile comprises machinery suitable to drive {HEAD ~ the screw pile} into the ground, said machinery further comprising a rotary drive suspended by means of a universal joint type coupler 
{ TAIL ~ A system } to measure the installation torque of a screw pile comprises machinery suitable to drive { HEAD ~ the screw pile } into the ground , said machinery further comprising a rotary drive suspended by means of a universal joint type coupler
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH