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CCL-WG-S: Strategic planning
CCL summary
General information
CCL members
CCL publications and bibliography
Presentation by Dr Sacconi at the 24th meeting of the CGPM
CCL working groups
Recommended values of standard frequencies
CCL key comparison portfolio
Photographs of the CCL
Key comparisons
DimVIM: Multilingual CMC classification scheme
Open access
CCL documents
CCL-CCTF documents
CCL-WG documents
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CCL working documents
CCL-CCTF documents
CCL-WG documents
MePWG documents
Direct access

Terms of reference:
  • to collect and make available information giving evidence for the continuing importance of metrology in Length;


  • to collect and make freely available information from the Member NMIs of the CCL regarding long-term research and development activities in order to encourage collaboration and coordination;


  • to propose long-term plans for future activities of the CCL over the next ten to fifteen years and review and update these plans on a regular basis;


  • to collaborate with the CCTF to continue to establish and support optical frequency sources that are needed for dimensional metrology interferometers.

Chair: Dr A. Sacconi (INRIM)
Members: WG chairs, TG chairs, RMO representatives, representative of JWGFS, Dr Giardini, Dr Pekelsky, Dr Takatsuji, CCL Exceutive Secretary