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).