测量长度的基本工具是刻度尺,根据不同的测量需要,刻度尺又做成多种,如木尺、钢尺、三角板、皮卷尺等.那么刻度尺如何使用?怎样才能够准确测量出被测物体的长度呢?其实只要把握了以下几点,刻度尺使用起来就很简单.一、使用前“三看”要仔细首先要根据测量的物体和要求选择合适的刻度尺,比如,测量教室的长度只要选精确到厘米的刻度尺即可,但若在安装门窗玻璃时则要选精确到毫米的刻度尺.选好刻度尺后要仔细观察.一看零刻度线:零刻度线是刻度尺的起始刻度,有的刻度尺零刻度线在边缘,有的则不是,要看清楚零刻度线在哪里,零刻度线是否磨损,如已磨损则应 The basic tool for measuring the length of the scale, according to different measurement needs, made a variety of scale, such as wooden ruler, steel ruler, triangle board, tape measure, etc. So how to use the scale and how to accurately measure the measured In fact, as long as the grasp of the following points, scale ruler to use it is very simple. First, before using “three see” to be careful first of all according to the measurement of objects and requirements to select the appropriate scale, such as measurement The length of the classroom as long as the election scale to the centimeter scale can be, but if the installation of doors and windows will have to select the accurate millimeter scale. Select the scale after careful observation. A look at the zero scale line: zero scale line The initial scale graduation scale, and some scale zero scale line at the edge, while others are not, to see where the zero scale line, zero scale line is worn, if worn should be