螺紋環規
螺紋(wen)(wen)環規(gui)(gui)
螺紋(wen)(wen)環規(gui)(gui)用(yong)于測量外螺紋(wen)(wen)尺(chi)(chi)寸的正確(que)性,通端(duan)為(wei)一(yi)件(jian),止端(duan)為(wei)一(yi)件(jian)。止端(duan)環規(gui)(gui)在(zai)外圓柱面上(shang)有(you)凹槽(cao)。當尺(chi)(chi)寸在(zai)100毫米以上(shang)時,螺紋(wen)(wen)環規(gui)(gui)為(wei)雙(shuang)柄螺紋(wen)(wen)環規(gui)(gui)型式...
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