trailer wheel aligner /laser distance meter is a measuring tool used to measure the distance between traction pin and axle

trailer wheel aligner /laser distance meter is used to inspect trailer independently, according to the structural feature of trailer.It adopts imported distance meter to measure if the axle is perpendicular to the traction pin and halved by it, then use special equipment for axle distance measurement to inspect if the axle distance is equivalent or misplacement occurs between axles.Finally we can judge if axles are parallel to each other and find out the tyre wearing causes.