貨號產(chǎn)品型號測量范圍分度值用途NR.TypeRangeResolutionUsage642-011XSG0～4mm0.01mm　　用來檢驗消失螺紋根部以保證外螺紋有足夠的長度并且確為接近消失點螺紋　　MeasuringtheconditionofDeviatingtrapezoidscrewtomakesureenoughlengthofouterscrewandknowingthatthescrewisthescrewgauge.642-012JTG 2mm0.01mm　　用于測量油管、套管、接箍螺紋的軸線與中心軸線間的同軸度偏差　　Measurethecoaxialvariationbetweenthecentralaxisandtheconnectingscrewofcannulaandvitta.642-010CKY光學系統(tǒng)放大倍率25.6 Magnifyingpowerofspecscopy25.6 　　用于螺紋牙型半角的測量　　Measurethehalfscrewangleofouterscrew.