游标卡尺和螺旋测微器是两种测量长度的仪器.在实验中,能正确读出它们的示数,是学生应该熟练掌握的一项基本的实验技能.在高考中曾多次考查.下面通过具体范例谈谈它们的读数问题. Vernier calipers and spiral micrometers are two kinds of instruments for measuring length. In the experiment, they can correctly read out their readings. This is a basic experimental skill that students should be proficient in. There are many examinations in the college entrance examination. The following Specific examples talk about their reading problems.