In order to ensure the compliance of legal measuring instruments with the provisions of this Act, the dedicated weights and measures authority may send its staff to the following places to perform necessary check:
1. the place of display and sale of legal measuring instruments;
2. the production premises or storage places where the legal measuring instruments subject to verification are produced or stored; and
3. places of business, work place, or other places whereat the legal measuring instruments are installed or being used.
In order to conduct the check and investigation described in the preceding Paragraph, the dedicated weights and measures authority may require the responsible person(s) of such place(s) to provide relevant information, and may further require the weights and measures organization to submit technical documents and samples within a given time limit for use in conducting the check or testing.

The dedicated weights and measures authority may proceed to an investigation of the likelihood of any violation of the provisions of this Act discovered while performing the check or other relevant activities under the preceding Article.
The investigation under the preceding Paragraph may be conducted in accordance with the following methods:
1. To notify the party or parties involved or relevant person(s) to present within a given time limit their explanations;
2. To notify the party or parties involved or relevant person(s) to provide the documents, evidence or other necessary information that are related to the violation within a given time limit;
3. To send its staff to the business place of the party or parties or the relevant persons, or to other places, to conduct necessary investigation. Where it is necessary, it may seal up the suspect law-violating measuring instrument(s) and place it under the custody of the party or parties referred to in subparagraph 1 under this Paragraph against an undertaking executed by such party or parties, or to request such party or parties to store the suspect instruments at a designated place.
The party or parties or relevant person(s) shall cooperate with the investigation conducted by the dedicated weights and measures authority under the preceding Paragraph, without evading, impeding or refusing such investigation.

The dedicated weights and measures authority may select and engage, on its own or as recommended by consumers’ protection organization(s), volunteers for monitoring measuring instruments to assist in monitoring and uncovering law-violating measuring instruments.
Regulations governing the selection and engagement of, volunteers for monitoring measuring instruments, the procedures for uncovering law-violating measuring instruments, and other relevant administrative matters shall be prescribed by the dedicated weights and measures authority in consultation with relevant government agencies.