GB/T 16857.3-2009 is an important part of the standard on coordinate measurement machines. For coordinate measurement machines with the axis of the turntable as the fourth axis, the process, method and standard of acceptance inspection and re-inspection inspection are clarified. Various performance indicators of such measurement machines are specified in detail, such as positioning accuracy, sexual repeability positioning accuracy, etc. Through this standard, production and acceptance links can be standardized to ensure that such coordinate measurement machines are accurate and reliable in complex measurement tasks, providing a strong measurement basis for machinery manufacturing, precision machining and other industries.