需要读数的仪表多,读数的规则就多了,因此读数时很容易出错,迫切需要一个新理念来统一读数规则,读数新理念就应运而生.读数新理念是先读一个偏大的数,再读一个偏小的数,然后在两数之间读一个有效数值.读数时需注意,对最小刻度为0.01、0.02、0.1、0.2、1等小分度的精密仪器,要读到最小刻度的下一位;对最小刻度为0.5、5、10等大 The need to read the meter and more reading rules, so when the reading is prone to error, an urgent need for a new concept of reading rules, the new concept of reading came into being.New reading concept is to read a large number, Read a small number, and then read a valid number between the two numbers. Be sure to read the readings, the minimum scale of 0.01,0.02,0.1,0.2,1 and other small sub-precision instruments, to read the smallest scale The next one; the smallest scale of 0.5,5,10 and so on