– the intergovernmental organization through which Member States act together
     on matters related to measurement science and measurement standards.
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Working Group of Member State Representatives

Terms of reference

The terms of reference were agreed at a meeting of Member State Representatives in October 2019.

  1. Examine the roles, responsibilities and relations of the organs set forth under the Metre Convention;
  2. In light of the above, clarify how to best to distinguish the work done by the organization, in particular the "Technical/Laboratory" and "Secretariat/Administrative" aspects;
  3. Consider principles of clarity and transparency;
  4. Present appropriate documented input to assist Member States in their preparation for the 27th meeting of the CGPM.

Co-Chairs:

  • Daniela Arruda Benjamin, Representative of the Federative Republic of Brazil
  • Robert Gunn, Representative of the United Kingdom

The Working Group is intended to be inclusive; all Member State Representatives are welcome to participate in its activities.


For further information please contact:


CGPM summary
General information
Procedure for a State to become an Associate State of the CGPM
Outcomes of the General Conference
26th meeting of the CGPM
25th meeting of the CGPM
Participation at the CGPM
List of Member States
Working Group of Member State Representatives
Procedure for a State to accede to the Metre Convention and become a Member State
List of Associates