一、引言JJG7-2004《直角尺检定规程》中没有给出直角尺测量面垂直度的测量结果不确定度分析与评定的示例。笔者在工作过程中结合实际操作,对于其测量结果不确定度进行了编写,包括不确定度来源分析及测量结果不确定度表示。本文仅以等级为0级,规格为500mm×315mm的宽座直角尺为例进行分析及计算,三角形直角尺、平行直角尺及铸铁直角尺的分析及计 I. Introduction JJG7-2004 “square ruler test procedures” does not give a square ruler measuring surface perpendicularity measurement uncertainty analysis and evaluation of examples. In the course of work, the author combined with the actual operation for the preparation of the uncertainty of measurement results, including the source of uncertainty analysis and the uncertainty of measurement results. This article only level 0, 500mm × 315mm wide square rectangular ruler as an example for analysis and calculation of the triangle square, parallel to the square and the right angle ruler cast rectangular analysis