直角尺RectangleRuler规格Type(mm)测量面对基面垂直度Squarenessbetweenmeasuringsurfaceanddatumsurface测量面平面度或直线度Flatness&stralghtnessofmeasuringsurface基面平面度或直线度Flatness&stralghtnessofdatumsurtace精密等级Precisiongrade( m)OO级O级OO级O级OO级O级160*100241211250*1602.551212400*2503.5712.512630*4004.591.5312.5用于零件,工作母机主轴及各种角度之测量Forthemeasurementofparts,machinetoolspindleandvariousangles