• Finely honed jaws accurately measure ID and OD
• Measures inside and outside diameters in inches or millimeters.
• Slide and lock included
• Comes in a protective plastic box 

Brief company introduction:

  Yubao became the first in the jewelry machine industry to introduce CIS system in 2004. And with a view to further improve the processing, standardization and normalization of enterprise management. The company became a participating unit for the establishment of standards for the casting industry in 2011 . Imported the IS09001 :2008 international quality management system in 2013