Calibration and Measurement Capabilities – CMCs
?
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.
Advanced search
Key and supplementary comparisons
?
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.
Advanced search
News
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.
31 MARCH 2026
Electric fields - GULFMET
1 new CMC in electric field measurements has been published in the KCDB for Saudi Arabia via GULFMET, in the field of Electricity and Magnetism.
31 MARCH 2026
DC voltage - COOMET
1 new CMC in DC voltage measurements has been published in the KCDB for Uzbekistan via COOMET, in the field of Electricity and Magnetism.
31 MARCH 2026
Electricity - APMP
1 new and 5 revised CMCs in radio frequency measurements, AC Power and DC Voltage have been published in the KCDB for China and Singapore via APMP, in the field of Electricity and Magnetism.
Statistics
Currently in the KCDB there are
258 CIPM MRA participants
1265 key comparisons
26412 CMCs
769 supplementary comparisons