The Weights and Measures Act Article 5
In order to ensure fair trade and to maintain proper public safety and health and environmental protection, the competent authority may designate measuring instruments that are provided for use in trading transactions, certification, official inspection and testing, environmental protection, public safety, and medical and public health activities as legal measuring instruments.
中文原文 度量衡法第5條
為確保交易公平、維護大眾安全健康及環境保護，主管機關得就供交易、證明、公務檢測、環境保護、公共安全、醫療衛生有關之度量衡器，指定為法定度量衡器。