trailer wheel aligner 1,fit for middle-bus,truck ... low chassis angles data5,Compensation: 30 Seonds Per Wheel.But Need equippped with secondary Lift 6,Car database ... after service, sent us photo first 4,truck wheel alignment Specification Item Front Axle Rear Axle Measuring Accuracy ... Angle——±0.02°±8°5,Catalog6, truck wheel alignment real photo trailer wheel aligner/heavy duty truck garage equipment,heavy ...