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从1981年起,在高考的物理试题中,曾多次考查游标卡尺的读数和原理,精确度从0.1mm提高到0.05mm,对中学物理的实验教学提出了较高的要求.游标卡尺为什么多次重复考,精确度为什么从课本上的0.1mm提高到0.05mm?其原因是,游标卡尺和螺旋测微器的刻度原理中体现了一种很重要的思维方法——测微思想.游标卡尺和螺旋测微器相比较,螺旋测微器的刻度原理较单一,将螺距0.5mm.巧妙地分成50等份,提高了测量的精确度,而游标卡尺刻度方法灵活多变,但原理不变.
From 1981 onwards, in the physics test of the college entrance examination, the reading and principle of vernier caliper were examined many times, the precision increased from 0.1mm to 0.05mm, which put forward higher requirements for experimental teaching of middle school physics. Why the vernier caliper repeated several times? The reason why the accuracy is increased from 0.1 mm to 0.05 mm in textbooks is due to the fact that vernier calipers and the scale principle of spiral micrometers reflect a very important way of thinking - the idea of micrometering. Vernier calipers and spiral micrometers Compared with the device, the scale principle of the spiral micrometer is relatively simple, and the pitch is 0.5mm. It is subtly divided into 50 equal parts to improve the accuracy of the measurement, and the vernier scale method is flexible, but the principle is not changed.