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本文提出了一种用互检原理检测数显测高仪测量滑座运动轨迹对底座定位面的垂直度（以下简称数显测高仪的垂直度）和90°角尺垂直度的检测方法，使高精度垂直度的检测简便易行。
In this paper, we propose a method to detect the verticality of the locating surface of the carriage (the verticality of the digital altimeters) High-precision verticality detection is simple and easy.