一、概况 滚轮式计数器在精密测量中的应用较多,这种计数器精度要求较高,一般有两项精度指标,即始轮的示值精度和除始轮外的其它各轮一线性精度。 图1所示为应用于千分尺的计数器,始轮分度值为0.01mm,其它各轮分度值依次为0.1mm,1mm,10mm。由始轮字码的 First, an overview Roller counter in the application of precision measurement more, this counter requires high accuracy, there are generally two precision indicators, namely the first round of the indication accuracy and the first round of the other round of a linear accuracy. Figure 1 shows the counter applied to the micrometer. The initial index value is 0.01mm, and the other index values ​​are 0.1mm, 1mm and 10mm. From the beginning round of the code