But , usually , detecting of the gauge with pointer is by manual work , after long time for vision work , eyes will get tired , and this leads to low detecting precision and long detecting period 現(xiàn)在,對(duì)很多沒有計(jì)算機(jī)操作界面的指針式儀表的檢定通常都是由人工來讀數(shù)和調(diào)節(jié),然而,人的眼睛在大量的視覺工作之后會(huì)出現(xiàn)視覺疲勞,造成了檢定精度低,檢定周期長。