Precision international provides automatic assembly systems from cosberg spa, italy. The automatic assembly systems are suitable for screw sizes ranging from m1.4 to m8, and for lenghts of up to 40 mm, with torque up to 50 nm. These units can be provided with information on the depth to which the screw should be driven, and to give a feedback it either the screw is not there or the threads are not there. Threads can be standard or special and the setting can be changed easily and speedily. A further range of units is available for the tightening of nuts; grub screws; or studs of size up to m12.