Calibration and Measurement Capabilities – CMCs
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Key and supplementary comparisons
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Added keywords act as an additional filter. Keywords separated by a space will be treated by the logical function AND automatically. You may also use OR. Keyword searches also find close matches. Placing quotation marks (") before and after the search word, e.g. "word", will allow for exact matches.

In case of multiple search, please use ADVANCED SEARCH.
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News
3 APRIL 2026
AC Current - COOMET
1 new CMC in AC Current measurements has been published in the KCDB by Uzbekistan via COOMET, in the field of Electricity and Magnetism.
3 APRIL 2026
Dimensional metrology - SIM
1 revised CMC in dimensional metrology has been published in the KCDB for Mexico via SIM in the field of Length.
3 APRIL 2026
Supplementary comparison in time interval - EURAMET
The Final report of the supplementary comparison EURAMET.TF-S1 has recently been published in the KCDB. This is a comparison on time interval measurements piloted by the Glowny Urzad Miar, Central Office of Measures (GUM), Poland and with 24 participants.
31 MARCH 2026
Temperature - SIM
1 revised CMC in temperature measurements has been published in the KCDB for Colombia via SIM, in the field of Thermometry.
Statistics
Currently in the KCDB there are
258 CIPM MRA participants
1265 key comparisons
26413 CMCs
769 supplementary comparisons