Caliper for accurate measurement from 0.1 to 150 mm 
 Made of stainless steel 
 Ease of use 
 Small screw to hold jaws anywhere 
 Internal and external diameter measuring function 
 It is an ideal tool for measuring gemstones and beads 
 It is used in jewelry making and many other professions 
 Technical Specifications : 
 Color: Silver 
 Size: 232 x 8 x 72