A key comparison of the calibration of a step gauge, to determine validity of participant's CMC claims and to support new CMC claims being offered for entry in the BIPM key comparison database.
Progress Report 2019-09-30
Circulation was completed in January 2019.
Draft A1 has been circulated to participants in February 2019.
Draft A2 has been circulated to participants in September 2019.
Issues arose around the stability of the 610 mm artefact during the comparison. In accordance with the protocol, the decision regarding next steps to deal with this will be taken by EURAMET TC-L in October 2019. Further reports will be circulated. An executive report will be required for this comparison, which adds a further 6-8 months to the end of the comparison reporting period.
Progress Report 2019-02-15
Report in progress