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電(dian)動紗(sha)線(xian)捻(nian)(nian)(nian)度測試儀由(you)控(kong)制箱(xiang)（數(shu)字顯(xian)示）、張力機構、插紗(sha)架等(deng)部(bu)件組(zu)成。主機解(jie)捻(nian)(nian)(nian)夾頭的轉動方(fang)向、轉速、啟(qi)動和(he)停止(zhi)由(you)控(kong)制箱(xiang)控(kong)制，捻(nian)(nian)(nian)回數(shu)測試的通(tong)過光(guang)電(dian)轉換由(you)控(kong)制顯(xian)示箱(xiang)顯(xian)示捻(nian)(nian)(nian)回數(shu)字。儀器的隔距可調，試驗時張力由(you)垂(chui)直指(zhi)針式(shi)杠桿施加張力，零(ling)位自停采用光(guang)電(dian)傳感器。