The value of maximum diameter, minimum diameter, height percentage measured by the instrument are traceable to Shenzhen Calibration Station of AQSIQ and national measurement standards.
通过溯源，该仪器测量的最大直径、最小直径、高度（全深）、全深比等数据已溯源至深圳市计量检定站直至国家基准。
Roundness error is evaluated by minimum region law. The diameter of the holes and the distance between the axes of two holes are calculated and measured by program.
在测量尺寸时，依据图像分割所提取的轮廓，使用自编程序利用最小区域法对圆度误差进行评定，并计算、测量链板的孔径和节距。
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