– the intergovernmental organization through which Member States act together
     on matters related to measurement science and measurement standards.
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Length: Committee structure
CIPM Consultative Committee:
  CCL: Consultative Committee for Length

CCL Working Groups:
  CCL-CCTF Frequency Standards Working Group (WGFS)
  CCL Working Group on Dimensional Nanometrology
  CCL Working Group on Strategic Planning
  CCL Working Group on the CIPM MRA
  CCL WG-MRA TG-L: Task Group on KC linking
  CCL WG-MRA sWG-CMC: Sub-group on CMCs and the DimVIM
  CCL WG-MRA sWG-KC: Sub-group on key comparisons
Unit of length (metre)
Committee structure
Recommended values of standard frequencies
Strategic plan
International equivalence
Calibration and measurement capabilities (CMCs)
International comparisons
At the BIPM
BIPM contact person