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.

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News
26 NOVEMBER 2025
Key Comparison of Mass standards - SIM
The Final report and results of the key comparison SIM.M.M-K6 have recently been published in the KCDB. This is a comparison of mass standards in the field of Mass and related quantities, piloted by Centro Nacional de Metrologia (CENAM) Mexico, with participants from 8 state economies.
25 NOVEMBER 2025
Force and Torque - APMP
7 revised CMCs in force and torque measurements have recently been published in the KCDB for India via APMP, in the field of Mass and related quantities.
25 NOVEMBER 2025
Electricity - APMP
1 new and 11 revised CMCs in electrical measurements have been published in the KCDB for Australia, Korea, Chinese Taipei, Japan and Thailand via APMP, in the field of Electricity and Magnetism.
21 NOVEMBER 2025
Supplementary Comparison in Length - SIM
The Final report of the supplementary comparison SIM.L-S2.2.n02 has been approved and published in the KCDB. This is a comparison of calibration of gauge blocks measured by mechanical and interferometric technique in the field of Diemensional metrology in which 8 state economies participated.
Statistics
Currently in the KCDB there are
258 CIPM MRA participants
1254 key comparisons
26518 CMCs
765 supplementary comparisons