万能工具显微镜测量大直径的不确定度评定

Uncertainty evaluation of major diameter measured by universal toolmaker's microscope

万能工具显微镜(以下简称万工显)是一种几何量计量的常用仪器,它被用于测量大直径小圆弧时,应当对测量结果的不确定度范围进行评定.

Universal Toolmaker's Microscops (UTM) is a kind of metrological instrument which can be used in measuring major diameter and minor circular arc. The uncertainty range of measuring result was evaluated in the paper.