阅读说明：本技术 坐标定位机 (Coordinate positioning machine ) 是由 J·杜普雷斯 C·M·E·沃伦 于 2019-02-25 设计创作，主要内容包括：描述了一种校准坐标定位机的方法。所述机器被控制成枢轴姿势,在所述枢轴姿势下,与所述机器的可移动部分相关联的目标点和与所述机器的固定部分相关联的枢轴点彼此分离已知间隔(s)。基于所述已知间隔(s)和针对那个姿势根据所述机器的现有模型参数预期的间隔确定那个姿势的误差值。所述机器被控制成多个不同的目标姿势,并且对于每个目标姿势,测量所述测量目标点与所述枢轴点之间的间隔(S),并基于所测量的间隔(S)和针对那个姿势根据所述现有模型参数预期的间隔来确定那个姿势的误差值。根据所述误差值确定总误差度量,并且确定新的参数组,所述新的参数组将产生比现有参数组更低的总误差度量。还描述了一种球形转接器和球杆仪延伸件。(A method of calibrating a coordinate positioning machine is described. The machine is controlled to a pivot attitude at which a target point associated with a movable part of the machine and a pivot point associated with a fixed part of the machine are separated from each other by a known interval(s). An error value for that pose is determined based on the known interval(s) and the interval expected from the existing model parameters of the machine for that pose. The machine is controlled to a plurality of different target poses, and for each target pose, the separation (S) between the measurement target point and the pivot point is measured, and an error value for that pose is determined based on the measured separation (S) and the separation expected from the existing model parameters for that pose. A total error metric is determined from the error values, and a new set of parameters is determined that will result in a lower total error metric than the existing set of parameters. A spherical adapter and a cue stick extension are also described.)