貨號(hào)產(chǎn)品型號(hào)規(guī)格用途NR.TypeSpecificationUsage642-019HXY標(biāo)尺刻度Range:0~4in 用于在待測(cè)螺紋上做出標(biāo)記或記號(hào)?! cribingamarkonthemeasuringscrew.642-020JYY-1微分頭量程Rangeofmicropoint:0~25mm分辨率Resolution:0.002mm 用于檢測(cè)管螺紋單項(xiàng)參數(shù)測(cè)量?jī)x?! ingleparametermeasurementofpipescrew.