The new automotive luminaires are more and more beautiful in geometry, and the design often uses free-form surface modeling. Therefore, the inspection and measurement of the shape and the matching accuracy of the body installation increase the difficulty, but the OEM only gives a few when verifying the quality of the lamp. The key RPS point (Reference points system) requires the supporting factory to directly measure the lamp on the special inspection tool with a coordinate measuring machine, because the production of the inspection tool is made.