专业人员的要常用才能保持准确，而且每年要送机构矫正。DIY的爱好者买一个，长期不用，弹簧就不准了。

来源: dongbeiren56 于 2019-11-15 16:27:15 [旧帖] [给我悄悄话] 本文已被阅读：次

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