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螺旋测微器是精密的测量长度的仪器,在工业零部件生产规格等测定中有广泛的应用。由于结构和原理较为复杂,读数方法别致,螺旋测微器的使用和读数便成了高中物理教学的重点和难点。在测电阻率和用双缝干涉测光的波长实验中都用到了螺旋测微器,且近几年在四川、重庆、海南、宁夏、天津等不少省(市)高考试卷中也都出现了螺旋测微器读数题目,足见螺旋测微器使用和读数的重要性。
Spiral micrometer is a precise measurement of the length of the instrument, in the industrial production specifications and other determination of a wide range of applications. Due to the complexity of the structure and principle, unique reading methods, the use and reading of spiral micrometer have become the focus and difficulty of high school physics teaching. Spiral micrometer has been used in the experiment of measuring the resistivity and the wavelength of the light measured by double-slit interferometry. In recent years, many micronaires have appeared in the entrance exam papers of Sichuan, Chongqing, Hainan, Ningxia, Tianjin and so on Spiral micrometer reading the title, showing the use of micrometer micrometer and the importance of reading.