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讨论了在直线度误差测量中应注意遵循的几个原则：测量值直接作用原则、测量线与工作线一致原则和两测头联线垂直被测风面原则；建议以最小包容区域计算机精确算法作为今后评定直线度误差的主要方法；提出了一种新的最小包容区域计算机精确算法—“构造封闭凸多边形法”；在采样点测量值直接作用和非直接作用两种情况下，根据其采样点偏差值的分布，给出了相应的直线度误差的测量下确定度评定公式。
Several principles that should be observed in the measurement of straightness error are discussed: the principle of direct measurement value, the principle of consistency between measurement line and working line, and the principle of perpendicular wind surface measured by two touch probes; the algorithm of least exact inclusion computer As the main method to evaluate the straightness error in the future. A new computer-based algorithm for minimum inclusive area was proposed, which is called “constructing a closed convex polygon method.” Under the direct and indirect effects of sampling point measurements, The distribution of the point deviation value gives the corresponding evaluation formula of the degree of certainty of the straightness error.