M8 Thread CMM Precise Calibration Sphere Ceramic Ball 25mm Diameter 157mm---

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25mm Diameter M10 Thread 157mm Lengh CMM Precise Calibration Sphere Ceramic Ball

25mm M8 Thread Ceramic Calibration Ball CMM Three-coordinate calibration sphere

Ceramic Ball 25mm Diameter, M10 Thread High-precision Ceramic Calibration Sphere

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High-precision Magnetic Force Ceramic Calibration Sphere 25mm Diameter M8 Thread