Akiko Hirai et al 2009 Metrologia 46 04005 doi:10.1088/0026-1394/46/1A/04005
Akiko Hirai1, K P Chaudhary2, Ahmad Makinudin Bin Dahlan3, Eleanor Howick4, Yu-Ping Lan5, Anusorn Tonmueanwai6 and Bui Quoc Thu7
Show affiliationsThe results of the APMP key comparison on calibration of gauge blocks by interferometry (APMP.L-K1.1) are reported. The comparison was planned to follow up the previous comparison APMP.L-K1. The comparison involved the measurement, by seven participating institutes, of ten steel gauge blocks ranging from 0.5 mm to 100 mm in length using techniques based on interferometry. The results are analyzed using En values with weighted mean values as the reference values. For calculating the reference values some measurement results had to be excluded by application of the En-criterion. Investigations of the reasons for the deviations have already been started by the respective institutes.
Main text. To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database kcdb.bipm.org/.
The final report has been peer-reviewed and approved for publication by the CCL, according to the provisions of the CIPM Mutual Recognition Arrangement (MRA).
Issue 1A (Technical Supplement 2009)
Akiko Hirai et al 2009 Metrologia 46 04005
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