1　会认 :要认清刻度的量程、分度值、零刻线和单位。量程指测量范围 ,是指刻度尺一次所能测量的最大长度 ,不同的刻度尺的量程不同 ;分度值(最小刻度值 )是指刻度尺上相邻两条最小刻度线的距离 ,不同刻度尺的分度值不同 ,分度值越小的刻度尺准确程度越高 ;零刻线是刻度尺的起? 1 will recognize: to recognize the scale scale, division value, zero mark line and unit. Range refers to the measurement range, which refers to the maximum length that the scale can measure at one time. The range of different scales is different; the division value (the minimum scale value) refers to the distance between two adjacent minimum scale lines on the scale. Different scales The scale of the ruler is different. The smaller the scale value is, the higher the accuracy of the scale is. The zero line is the scale scale.