Hunter Engineering's improved Winalign HD Alignment System uses four or six DSP700T heavy-duty alignment sensors with roll-forward compensation to compensate all sensors without the need to jack each axle. Hunter's DSP700T sensors are accurate to a range of 600 inches (1,524 centimeters) to cover all truck, bus and trailer lengths. When equipped with the timesaving capabilities of Hunter's optional Fully Integrated Alignment (FIA) turn-plate kit, the system produces full vehicle measurements in as little as four minutes. Hunter's self-centering wheel adopters fit wheels ranging from 15 to 28 inches.