As a national legal metrology institution, the geometric quantity project team has designed and manufactured a new comprehensive construction quality calibration device to ensure the quality of construction projects. The device achieve multi-dimensional, multi-parameter calibration though the flatness and straightness main calibration structure, the verticality main calibration structure, the thickness main calibration structure, the angle main calibration structure and their auxiliary design. It almost covers all the calibration of current construction quality basic measurement instruments in the field of geometric quantity, meets the 1/3 main measuring instruments accuracy requirements, and realizes reliable traceability and dissemination of value of quantity. It is an innovative, comprehensive and practical high-precision measurement standard device.