The Pinnacle Automotive Systems JUMBO 3D Heavy-Duty Aligner, No. J3DHDA, is an imaging aligner designed to accurately and efficiently align a tractor and trailer up to 62' in length. The aligner features a drawbar gauge that aligns a full trailer fitted with a swiveling tow bar at the front, a drive-through capability, a bushing calculator that makes adjustments on the wheel in free mode, and a frame-based axle alignment that allows technicians to align the frame. It also has a steering lock, a safety feature that locks the steering wheel against the floor instead of the driver seat.