The parts are all here but the controller has given up the ghost. There are 2 good SEM servos, ball screws and linear slides. It is designed to fit on a machine the size of a Colchester triumph 2000 to convert it to CNC motion. It fits onto the saddle which is manually positioned and the Audit gives about 10 or 12 inches of CNC controlled travel. Perfect for repetitive or complex curves or angles on chucking jobs. It may even use the Colchester toolpost . Mach3 or similar could be used to control it. It is pretty heavy.