本报告旨在为证明尺寸测量可追溯至国际单位制长度（米）提供指南。国际计量学基本术语和通用术语词汇表（VIM）[7]提供了可追溯性的一般定义。然而，这个定义并没有具体说明许多细节。本报告解释了VIM的定义。根据B89对尺寸测量的计量溯源性进行证明。7.5要求如下:（a）被测量物（被测量量）的明确声明，（b）测量中使用的测量系统和/或标准的标识，（c）测量结果的测量不确定度声明，符合《测量不确定度表示指南》[1,2]中描述的原则，（d）不确定度预算，该预算描述并证明了重要的不确定度因素，（e）测量中使用的长度标准可追溯到适当的计量终点的文件，（f）确保测量系统（和其他标准，如果使用）和测量条件在测量不确定度声明的有效条件内的测量保证计划。

The purpose of this report is to provide guidelines for demonstrating the traceability of dimensional measurements to the SI unit of length (the meter). The International Vocabulary of Basic and General Terms in Metrology (VIM) [7] provides a general definition of traceability. However, many details are not specified by this definition. This report provides an interpretation of the VIM definition. The demonstration of metrological traceability of a dimensional measurement per B89.7.5 requires the following: (a) clear statement of the measurand (the quantity under measurement), (b) identification of the measurement system and/or standards used in the measurement, (c) a statement of the measurement uncertainty for the measurement result, consistent with the principles described in the Guide to the Expression of Uncertainty in Measurement [1,2], (d) an uncertainty budget that describes and guantifies the significant uncertainty contributors, (e) documentation traceability of the length standard(s) used in the measurement back to an appropriate metrological terminus, (f) a measurement assurance program that assures that the measurement system (and other standards if used) and the conditions of the measurement are within the validity conditions of the measurement uncertainty statement.