Regulations Governing Verification and Inspection of Measuring Instruments Article 17

The legal measuring instruments that have passed verification shall be subject to periodical or non-periodical inspection conducted by the verification agency (institution) when they are put in use.The verification agency (institution) may decide the scope of inspection according to all or, part of verification and inspection technical requirements of legal measuring instruments.
中文原文 度量衡器檢定檢查辦法第17條
檢定合格並在使用中之法定度量衡器,應接受檢定機關(構)之定期或不定期檢查。
前項檢定機關(構)得依度量衡器之檢定檢查技術規範,採全部或部分項目及範圍之檢查。

English translation for reference only; the Chinese text prevails. Not legal advice.