数字比较器 meaning in English

dc digital comparator
digital comparator

Then you have to check also the x and z axes digital comparators
然后你必须检查x轴和z轴的数字比较器。
Move with the x axis micrometric movement the sharp shadow , till the digital comparator red light is on the zero right position
微调移动x轴接近“十”字比较尺，直到数字比较器的指示灯在零点右边变亮。
You have to do the measurings only when both the digital comparator and the axis in measure focus bar are perfectly steady and exactly in the same points
你不得不做测量，当数字比较器和轴的聚焦条在同一点是确定的、稳定的。
In this position do sharp microrotations clockwise and counterclockwise . the focus bar has always to remain at most , while the digital comparator red reference does very small swings
在这个位置对主轴做一下顺时针和逆时针移动。聚焦条总是存在，当数字比较器的显示红色，存在一些小的震动时。
With the focus bar at most , go on the most left point of the digital comparator and now stop the spindle rotation ; the focus bar has to be completely lightened and has not to switch on or off segments
当聚焦条出现了绝大部分时，继续向左移动数字比较器显示值停止，停止主轴的旋转；聚焦条完全的点亮并显示在屏幕，并且中间没有分割点。