Abstract: Disclosed is a two station positioner for positioning work pieces for mounting and working at the same time. A first arm positioner can be located in a mounting position for mounting a work piece on the first arm positioner, while the other arm positioner is located in a working position, where another work piece can be welded or machined. The first positioning arm, in the mounting position, is sufficiently low to allow workers to mount the work piece without the use of elevated platforms. A pedestal exchange platform can then be indexed to place the first positioning arm with the mounted piece in the working position and the other positioning arm in the mounting position. In this manner, workers can mount work pieces while other work pieces are being worked. In the working position, the positioning arm is rotated on a horizontal axis, which reduces programming complexity for robotic welders or machines.