帶鉆防震百分表

1.圓形百分表主體   Round mechanical body.
2.表圈轉動圈為塑料外圈   Plastic dial adjustable ring.
3.帶公差指示器   With adjustable tolerance markers.
4.寶石軸承，機芯防震   Jeweled and shock proof.
5.帶表圈緊固裝置   With dial locking screw.

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