| AIST | National Institute of Advanced Industrial Science and Technology |
| NMIJ | National Metrology Institute of Japan |
| BIPM | Bureau International des Poids et Mesures |
| OIML | International Organization of Legal Metrology |
| JCRB | Joint Committee of the Regional Metrology Organizations and the BIPM |
| APMP | The Asia Pacific Metrology Programme |
| APLMF | The Asia-Pacific Legal Metrology Forum |
| Australia | NMIA (National Measurement Institute of Australia) |
| Australia | CSIRO (Commonwealth Scientific and Industrial Research Organization) |
| Brazil | INMETRO National Institute of Metrology, Quality and Technology |
| Brunei | CPRU (Construction Planning and Research Unit, Ministry of Development) |
| Cambodia | DOM-MIME (Department of Metrology, Ministry of Industry Mines and Energy) |
| Canada | NRC-INMS (Institute for National Measurement Standards) |
| China | NIM National Institute of Metrology (NIM) |
| France | BIPM (Bureau International des Poids et Measures) |
| France | LNE (Laboratoire National de Metrologie et d'Essais) |
| Germany | PTB (Physikalisch-Technische Bundesanstalt) |
| Hong Kong | SCL (Standards and Calibration Laboratory) |
| Indonesia | Puslit KIM-LIPI (Research Center for Calibration, Instrumentation and Metrology - Indonesian Institute of Sciences) |
| Italy | INRIM (National Institute of Metrological Research) |
| Korea | KATS (Korean Agency for Technology and Standards) |
| Korea | KRISS (Korea Research Institute of Standards and Science) |
| Lao PDR | Science, Technology and Environment Organisation DISM (Department of Industrial Property, Standardisation and Metrology ) |
| Malaysia | NML-SIRIM (National Metrology Laboratory, SIRIM Berhad) |
| Myanmar | MST (Ministry Of Science and Technology ) |
| Netherland | NMi-VSL (NMi Van Swinden Laboratorium/Nederlands Meetinstituut) |
| New Zealand | MSL (Measurement Standards Laboratory) |
| Norway | JV (Norwegian Metrology Service, Justervesenet) |
| Philippines | NML (National Metrology Laboratory of the Philippines) |
| Singapore | NMC/A*STAR (National Metrology Centre/Agency for Science, Technology and Research) |
| Spain | CEM (Centro Espanol de Metrologia) |
| Sweden | SP (SP Technical Research Institute of Sweden) |
| Swiss | METAS (Federal Office of Metrology) |
| Thailand | NIMT (National Institute of Metrology (Thailand)) |
| Taiwan | NML R.O.C. (National Measurement Laboratory R.O.C.) |
| UK | NPL (National Physical Laboratory) |
| USA | NIST (National Institute of Standards and Technology) |
| Vietnam | VMI-STAMEQ (Vietnam Metrology Institute, Directorate for Standards and Quality) |