Committee members

Consultative Committee for Length (CCL)

President

Dr V. Coleman

Section Manager, Nanometrology

National Measurement Institute, Australia

Australia

Executive Secretary

Dr G. Panfilo

Bureau international des poids et mesures

France

ALL MEMBERS

List of meetings

Meetings and related documents

Past Meeting

19th meeting of the CCL
  • From 10 to 11
  • October
  • 2024

Workshop

CCL Workshop on "Latest developments in the field of Length”
  • 09
  • October
  • 2024

Past Meeting

CCL-WG-S
  • 09
  • October
  • 2024

Past Meeting

CCL-WG-N
  • 08
  • October
  • 2024
All meetings

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Working Groups

CCL-TG-DIG

CCL Task Group on Digitalization

CCL-WG-CM

CCL Working Group on Coordinate Metrology

CCL-WG-MRA

CCL Working Group on the CIPM MRA

CCL-WG-N

CCL Working Group on Dimensional Nanometrology

CCL-WG-S

CCL Working Group on Strategic Planning

CCL DGs

Publications

Publications

Meeting reports

[CCL] 19th meeting (2024)

[CCL] 18th meeting (2021)

[CCL] 17th meeting (2018)

Guidance documents on the CIPM MRA

[CCL] CCL-GD-1
Running of MRA comparisons in length metrology and monitoring their impact on CMCs

All publications

ccl-mission

Mission

The Consultative Committee for the Definition of the Metre (CCDM) was set up in 1952. Its name was changed to Consultative Committee for Length by the CIPM in 1997.

Present activities concern matters related to the definition and realization of the metre, practical length and angle measurement, and advice to the CIPM in the field of length metrology.

Asset Publisher

Reports and announcements

CIPM Strategy 2030+

Report of the 113th meeting of the CIPM (2024)

Report of Session III of the 113th meeting of the CIPM (2024)

Report of the 19th meeting of the CCL (2024)

Report of Session II of the 113th meeting of the CIPM (2024)

Annual Review Supplement - Activities of the BIPM Departments 2023

BIPM Annual Review 2023/2024

Report of Session I of the 113th meeting of the CIPM (2024)

Proceedings of the 27th meeting of the CGPM (2022)

Report of the 112th meeting of the CIPM (2023)

BIPM Workshop on Quantum Technologies

JCTLM Newsletter - Issue 10 - October 2023

Kickoff Meeting of the Forum on Metrology and Digitalization

BIPM webinar on Digital References for Metrology

BIPM Annual Review 2022/2023

Report of the 111th meeting of the CIPM (2022)

Resolutions adopted at the 27th meeting of the CGPM

CC survey on the digital transformation

A digital framework for realising the SI - a proposal for the metre

Decisions of the CIPM (June 2022)

BIPM Annual Review 2021/2022

Report of the 110th meeting of the CIPM (2021)

CCRI webinar on Git for Metrology - video available

Draft Resolutions - 27th CGPM meeting (2022)

BIPM Strategic Plan 2022

Report of Session II of the 110th meeting of the CIPM (2021)

Report of the 18th meeting of the CCL (2021)

Report of Session I of the 110th meeting of the CIPM (2021)

Metrologia - A review of approaches for the practical realization of traceable length metrology from 10−11 m to 1013 m

BIPM Annual Review 2020/2021

Report of the 109th meeting of the CIPM (2020)

Outcomes of the 43rd JCRB meeting (2021)

Metrologia: Focus on Length Metrology