Standard Reference Data, NIST:
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The International Comparisons Database provides access to results of comparisons of measurements and standards organized by the consultative committees of the Comite International des Poids et Mesures (CIPM) and the Regional Metrology Organizations. The official source of the data is the BIPM key comparison database.
These measurements promote innovation, increase competitiveness, and facilitate trade.
The codes in the list below have the following meanings:
SRD 136 International Comparisons Database, Online, DG