Compared with tangent three-coordinates measuring machine and intangent structured light scanner, it is characterized by the low cost, the compact structure, the simplicity of operation, and is easy to perform the online-measure ment.

• 它与接触式三坐标测量仪和非接触式结构光三维扫描仪相比，具有造价低、结构紧凑、操作方便和宜于在线测量等优点。