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Title: Enforcement Rules of Weights and Measures Act Ch
Date: 2017.09.28
Legislative: 1.Adopted and promulgated by the Order of Ministry of Industry and Commerce on 11 April 1929
2.Amended and promulgated by Order of the Ministry of Industries on 5 December 1931
3.Amended and promulgated by Order of the Ministry of Economic Affairs on 29 May 1934
4.Amended and promulgated by Order of the Ministry of Economic Affairs on 29 May 1944
5.Amended and promulgated by Ministerial Order on 10 June 1955
Articles 29, 30 and 32 amended and promulgated by Ministerial Order on 7 April 1960
6.Amended and promulgated by Ministerial Order on 25 May 1973
7.Chapter 7 amended and promulgated by Ministerial Order on 26 November 1974
8.Articles 257~269, 272 and 292 amended and promulgated by Ministerial Order on 2 July 1975
9.Articles 292 and 323 amended and promulgated by Ministerial Order on 23 February 1978
10.Amended and promulgated by Ministerial Order on 14 March 1984
11.22 Articles amended and promulgated in full by Ministerial Order on 28 August 1987
12.Article 8 and annexed Tables 2, 3 and 4 amended and promulgated, and Article 9-1 added by Ministerial Order on 23 November 1987
13.Articles 8, 9, 13, 18 and 19 and annexed Tables 1~9 amended by Ministerial Order on 31 March 1993
14.Article 19-1 added by Ministerial Order on 29 May 1995 Articles 8, 9, 13 and 18 amended by Ministerial Order on 2 August 1995
15.10 articles amended in full by Ministerial Order on 20 January 1999
16.16 articles amended and promulgated in full by Ministerial Order on 22 October 2003
17.Article 9 amended and promulgated by Ministerial Order on 14 September 2007
18.Articles 2 and 3 amended and promulgated by Ministerial Order on 28 September 2017
Content:  Article 1
These Rules are established pursuant to Article 60 of the Weights and Measures Act (hereinafter
referred to as “the Act”).

Article 2
The varieties of legal measuring instruments in Article 5 of the Act includes the following:
1.Dimensional instruments;
2.Weighing instruments;
3.Weights;
4.Force meters;
5.Thermometers;
6.Pressure meters;
7.Volumeters;
8.Speed meters;
9.Heat meters;
10.Density meters;
11.Concentration meters;
12.Specific gravity meters;
13.Watt-hour meters;
14.Surface area meters;
15.Illuminometer;
16.Irradiation meters;
17.Sound level meters;
18.Deninermeters; and
19.Other instruments designated by the competent authority.
The categories and scopes of each of legal measuring instrument covered in the preceding paragraph
shall be designated by the competent authority by notice.

Article 3
According to the provisions of Article 7 of the Act, the traceability of measuring instruments used
in performing official inspection and testing and that of reference standards used by verification
and/or inspection agencies (institutions) or organizations shall be maintained at the following
agencies (institutions) or laboratories:
1.National Measurement Laboratory R.O.C.
2.A dedicated authority in charge of measurement or institutions appointed by the dedicated authority.
3.Laboratories obtaining the CNS 17025 or ISO/IEC 17025 certificate issued by domestic accreditation
institutions, which shall sign the Mutual Recognition Arrangement (MRA) with International Laboratory
Accreditation Cooperation (ILAC).
If the above agencies (institutions) or laboratories are unable to provide the traceability, the
traceability may be provided by the following laboratories:
1.Foreign National Measurement Laboratories.
2.Laboratories obtaining the ISO/IEC 17025 certificate issued by the foreign accreditation institutions,
which shall sign the Mutual Recognition Arrangement (MRA) with International Laboratory Accreditation
Cooperation (ILAC).

Article 4
The term “measuring administration activities related to weights and measures" mentioned in Paragraph
One, Article 8 of the Act refers to the promotion of statutory units of measurement, the verification
and inspection of legal measuring instruments, the check of the business of weights and measures
organization, market surveillance, and education/training on metrology.

Article 5
The term “international system of units (SI)” mentioned in Article 10 of the Act refers to the units
defined by the General Conference of Weights and Measures.

Article 6
The term “academic research and experiment institution" mentioned in Subparagraph 5, Article 12 of the
Act refers to the scientific, technical and experimental institutions subordinate to universities,
governments and non-profit organizations.

Article 7
For legal measuring instruments that may be exempted from verification in accordance with Subparagraph 3,
Article 15 of the Act, the applicant shall, before the legal measuring instruments are released out of
the factory or upon importation, submit an application form describing the trademark, type and serial
number, to the dedicated weights and measures authority for examination. Exemption from verification will
be granted where it is deemed as qualified.
Exemption from verification for legal measuring instruments as mentioned in the preceding Paragraph shall
be limited to five sets of the same type. These instruments shall be labeled or affixed in the prominent
place of the body with markings of “for approval purpose.” Where necessary, the dedicated weights
and measures authority may conduct examination.
Where the purpose of the legal measuring instruments granted exemption from verification in accordance with
Paragraph One is altered in such a way that the conditions for exemption from verification are no longer
satisfied, application for verification shall be made for such instruments.

Article 8
For legal measuring instrument that may be exempted from verification in accordance with Subparagraph 4,
Article 15 of the Act, the applicant shall, upon importation, submit an application form together with the
import declaration forms to the dedicated weights and measures authority for examination. Exemption from
verification will be granted where it is deemed as qualified.
Legal measuring instruments that are granted exemption from verification must be exported, after processing
or assembling or in its original forms, by the applicant within six months from the date exemption is
granted. An applicant shall report to the dedicated weights and measures authority to close the case by
providing related export certificates.
Applicants unable to report to the dedicated weights and measures authority to close the case within the
six-month period, they are required to apply to the authority for an extension of up to six months. Further
extensions may be applied for if necessary.
If an applicant fails to report to the dedicated weights and measures authority to close the case, or to
request an extension in accordance with the preceding two paragraphs, exemption from verification shall be
granted only after completion of the reporting or extension procedures.

Article 9
(Deleted.)

Article 10
The expression “a measuring instrument is not manufactured in accordance with the approved type” mentioned
in Subparagraph 2, Paragraph One of Article 31 and Subparagraph 1, Paragraph One of Article 32 of the Act
shall mean the alteration of structure, materials, or technical characteristics of the approved type or
non-compliance with the technical specifications for type approval of measuring instruments.

Article 11
A weights and measures organization shall follow the appropriate provisions below if their type approved
legal measuring instruments meet the circumstances described in Paragraph One, Article 31 of the Act and
a time limit is given for recall of the instrument by the dedicated weights and measures authority when
the type approval is revoked or rescinded by the authority in accordance with Paragraph Two, Article 31 and
Subparagraph 1, Article 33 of the Act:
1.Where the type approval is revoked: the recall shall be made to all legal measuring instruments of the
type at issue that have been released out of the manufacturing premises or imported; or
2.Where the type approval is rescinded: the recall shall be made to the batch of legal measuring instruments
that are found to be violating the laws and those that have been released out of the factory or imported
afterwards.

Article 12
The application for verification mentioned in Article 39 of the Act shall mean that the manufacturer or
importer of measuring instruments apply for verification before displaying, selling, installing or using
such instruments. However, if the legal measuring instruments can be verified only after they are installed
at the place of usage, application for verification shall be filed after such instruments are installed and
before they are put in use.

Article 13
The check performed by the dedicated weights and measures authority in accordance with Article 42 of the Act
shall cover the followings:
1.That the legal measuring instruments comply with the marking or labeling requirements set forth in Article 12
of the Act;
2.That the legal measuring instruments comply with the provisions set forth in Articles 20, 21, 25, 29, 31, 32
or 39 of the Act;
3.That law-violating legal measuring instruments to be recalled within a specified time limit are recalled
accordingly in accordance with relevant provisions; and
4.That the legal measuring instrument prohibited from being displayed or sold are not displayed or sold.

Article 14
A report shall be made for the check conducted in accordance with Article 42 or the investigation conducted
in accordance with Article 43 of the Act, and shall be signed by the representative under check or
investigation.

Article 15
When an investigation is conducted in accordance with subparagraph 3, Paragraph Two, Article 43 of the Act
and the legal measuring instruments are suspected to be violating regulations, the personnel that conducts the
check shall prepare a custody statement and have it signed by the representative under investigation, who may
hold these instruments under custody or transport them to a designated storage place. The representative shall
also prepare a document specifying sources of these instruments.

Article 16
These Rules shall take effect upon the date of promulgation.