1)Double camera combine with four target plates , provides the most efficient and accurate four-wheel location measurement techniques.

2)Four target plates have no electronic components, avoiding the error and mistakes caused by the common sensor.

3)Cameras constantly take pictures for the four target plates and do precise calculation, the measurement data immediately shown.

4)Camera calibration has been finished before leaving the factory,so can be used for a long time.

5)The camera is fixed on the camera holder ,no need camera adjustment.

6)The 1394 camera has higher collection efficiency, less occupancy resources,and stronger anti-interference ability.

7)The target plate has no electronic devices,no need calibration and cable connection control.