游标卡尺、螺旋测微器是高中阶段要求会读数的重要测量工具,学生在读数时出错的机率较大.那么,是哪些地方容易出错呢?本文从实例分析归结易出错的地方及其原因,以达到减少出错的目的.一、游标卡尺错例分析例1 如图1所示,读数为 __mm.错误读数及原因分析:(1)40 mm+0.02×35mm=40.70 mm.读主尺时,游标尺的零刻度线 Vernier caliper, spiral micrometer is an important measurement tool for high school students who require readings. Students are more likely to make mistakes when reading. So, where is the error prone? This article from the example analysis of the prone to error and its causes, To reduce the error of the purpose. First, vernier caliper error analysis example 1 as shown in Figure 1, the reading is __mm. Error readings and cause analysis: (1) 40 mm +0.02 × 35mm = 40.70 mm. When reading the main ruler, tour Zero mark line of ruler