Multi function Screw Thread outside micrometer with 7paris, can measure the tap ... ! Digital Screw Thread Micrometers ,high quality! have CE, ROSH certification! Multi function Screw Thread outside micrometer with 7paris, can measure the tap ... with cheap price! Range:0-25mm,25-50mm,50-75mm,75-100mm Accuracy:0.004mm Multi function Screw Thread outside micrometer with 7paris