This bilateral SIM key comparison on calibration of gauge blocks by interferometry (SIM.L-K1.2007.1) was carried out between CENAM (Mxico) and INTI (Argentina). Its scope is to support and maintain the claimed Calibration and Measurement Capability (CMC) by the participants, which regularly offer the service of gauge block calibration by optical interferometry. The comparison was held from first half of 2018 to second half of 2019, and involved the measurement of eleven steel gauge blocks-eight in the range of short gauge block and three in the range of long gauge block. The reference values for each nominal length were taken as the arithmetic mean. The results of both participants are in good agreement with the reference values for all the gauge blocks measured. This makes the present comparison exercise valid to provide evidence of the participants' competence. The results also provides evidence to support the CMC claims of the participants in gauge block calibration by optical interferometry and for those service that stems out of this key technique as required by the CIPM Mutual Recognition Arrangement (CIPM MRA).

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 (CIPM MRA).

这种通过干涉测量法校准量块的双边 SIM 密钥比较 (SIM.L-K1.2007.1) 是在 CENAM（墨西哥）和 INTI（阿根廷）之间进行的。其范围是支持和维护参与者声称的校准和测量能力（CMC），该能力定期提供通过光学干涉测量的量块校准服务。此次比对于2018年上半年至2019年下半年进行，共测量了11个钢量块——8个短量块范围，3个长量块范围。将每个标称长度的参考值作为算术平均值。两位参与者的结果与所有测量块的参考值非常吻合。这使得目前的比较练习有效地提供了参与者能力的证据。结果还提供了证据来支持通过光学干涉测量法进行量块校准的参与者的 CMC 声明，以及根据 CIPM 相互识别安排 (CIPM MRA) 要求的源自该关键技术的服务。

要访问本文的正文，请单击最终报告。请注意，此文本出现在 BIPM 密钥比较数据库 kcdb.bipm.org/ 的附录 B 中。

根据 CIPM 互认安排 (CIPM MRA) 的规定，最终报告已通过同行评审并由 CCL 批准发布。