# Council Directive of 20 December 1979 on the approximation of the laws of the Member States relating to units of measurement and on the repeal of Directive 71/354/EEC (80/181/EEC), Article 3

Extent: E+W+S+N.I.

1. For the purposes of this Directive ‘supplementary indication’means one or more indications of quantity expressed in units of measurement not contained in Chapter I of the Annex accompanying an indication of quantity expressed in a unit contained in that Chapter.
2. The use of supplementary indications shall be authorised.
3. However, Member States may require that measuring instruments bear indications of quantity in a single legal unit of measurement.
4. The indication expressed in a unit of measurement listed in Chapter I shall predominate. In particular, the indications expressed in units of measurement not listed in Chapter I shall be expressed in characters no larger than those of the corresponding indication in units listed in Chapter I.
5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Source: https://www.legislation.gov.uk/eudr/1980/181/article/3 (the official version)
Page: https://openlegislation.uk/eu-directive-1980-181/article-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.