- 1 - ♦ 卡尺或卡尺或游标卡尺游标卡尺: 游标卡尺包括固定的L-形尺子以毫米为单位，标有刻度。游动的尺子也是 L 形的，用游尺增加测量的准确度。 ♦ Calliper or v ernier calliper: The vernier calliper consists in a fixed L-shaped ruler marked with divisions, in this case in millimetres. The mobile ruler, also L-shaped, has a vernier to increase the accuracy of measurement. 游标尺有两个刻度，-一个是与固定尺相关，另一个与游动尺相关。 The vernier is formed of 2 scales - one corresponding to the fixed ruler and a different one corresponding to the mobile ruler. 通常情况下，游动尺上的刻度要比固定尺的刻度更精确。 Normally, the number of divisions on the mobile ruler is greater than on the fixed ruler. Figura 2 / Figure 2 - 2 - 游标尺的精确度是由它测量的最小单位决定的。通常是由游动尺按需要轻微移动，以使游标尺的游动尺和固定尺的刻度重合。 因此图 2 游标尺的精确度为: a=1-9/10=1/10=0,1 图三的精确度为: a=2-9/5=1/5=0,2 以下是用游标尺测量的各种不同的方法: The accuracy of the vernier is the smallest measurement that it is able to take. This is always the smallest movement of the mobile ruler in its direction of movement that is necessary so that the first division of the mobile scale coincides with one of the divisions of the fixed scale. Therefore the accuracy of the vernier in figure 2 is: a=1-9/10=1/10=0.1 and that of figure 3 is: a=2-9/5=1/5=0.2 Below are various ways to take measurements with the vernier calliper: 随着电子科学技术的发展，人们研制出了电子游标尺。 The development of electronics has given rise to digital vernier callipers: Figura 3 / Figure 3 - 3 - 以下是使用电子游标尺的一些例子： Below are some examples of uses for digital vernier callipers: ♦ 螺旋千分尺螺旋千分尺：：附在旋钮上的套环共有50 或100 个刻度（由螺纹节距决定），一转套环（与刻度相对应）就会产生...
