大多数学生对螺旋测微器总是一知半解,不能正确理解和使用这一仪器。究其原因主要有两点:一是螺旋测微器太小,学生不易看清内部结构;二是中学缺乏形象直观、立体感强的螺旋测微演示仪(即使有螺旋测微演示仪,也是平面型的,和实物相差太远,缺乏直观性)。据我所知,有许多物理教师经过大量尝试,准备制作 Most students always have little knowledge of spiral micrometers and cannot properly understand and use this instrument. There are two main reasons: First, the spiral micrometer is too small for students to see clearly the internal structure; Second, the spiral micrometer demonstrator lacks the intuitive and three-dimensional sense in secondary schools (even if there is a micrometer demo instrument, Plane type, and the physical difference is too far, lack of intuitiveness). As far as I know, there are many physics teachers who have tried a lot to prepare