Straightedge rule( square rule, slide gauge, inside and outside micrometer, steel tape, feeler, dial gauge, depth micrometer, wire gage, radius gage, thread pitch gage

• 直尺（尺、标卡尺、径和外径千分尺、卷尺、尺、分表、度千分尺、规、径规、距规）一种常用量具。