常见测量工具的读数

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,常见测量工具的读数,一、游标卡尺（,10,分度、,20,分度、,50,分度）,0,1,2,3,4,5,6,7,8,9,0,0,1,2,3,4,5,6,7,8,9,10,50分度游标尺,游标尺,紧固螺钉,主尺,尺身,内测量爪,外测量爪,深度尺,3,10分度游标尺,0,5,10,0,1,4,20分度游标尺,0,10,20,0,1,2,3,5,主尺,cm,3,10,游标,0,27,L=,27,+,7,0.1,70.1,=27.7mm,主尺,cm,1,10,游标,0,L=,5,+,19,0.05,=5.95mm,2,请你读出下列游标卡尺的读数：,20,二、螺旋测微器（千分尺）,螺旋测微器的使用,1,、螺旋测微器的构造：,A,P,F,T,G,H,K,K,A,、固定小砧,P,、可动小砧,F,、,U,型框架,G,、固定尺,H,、可动尺,T,、固定旋钮,K,、旋钮（又称微分筒）,K,微调,4,、,螺旋测微器,的读数原理：,0,1,2,固定刻度：,每刻度为,1,毫米,45,0,40,可动刻度：,50,等分主尺上的,0.5,毫米，每等分为,0.01,毫米,测量读数,=,固定刻度,+,半刻度,+,可动刻度（,+,估读位）,半刻度,三、电流表和电压表,如图1所示伏特表指针位置，若用,0-3V,量程时，,图 1,图 2,读数为,2.50V,如图2所示安培表指针位置，若用,0-3A,量程时，,读数为,1.60A,0,1,2,3,A,读数：,0.70A,0,1,2,3,V,读数：,2.40V,0,0.2,0,.,4,0.6,A,读数：,0.14A,读数：,0.37A,0,0.2,0,.,4,0.6,A,0,5,10,15,V,读数：,10.5V,0,5,10,15,V,读数：,9.5V,