![Jewelry and watch caliper 100mm/4" Jewelry and watch caliper 100mm/4"](https://cdn11.bigcommerce.com/s-iic0hc/images/stencil/300x300/products/40170/51009/35.175withgemstone.1__86732.1658864220.jpg?c=2)
![Jewelry and watch caliper 100mm/4" Jewelry and watch caliper 100mm/4"](https://cdn11.bigcommerce.com/s-iic0hc/images/stencil/160w/products/40170/51010/35.175photo2.1__90554.1658864220.jpg?c=2)
This hand held gauge is easy to use and convenient. The holes in the gauge are used to measure stones, while the extensions are used to measure mountings. Makes comparing 2 similar sizes easy. One side shows, millimeters, the other side shows the corresponding carat measurements. Measures 2mm-11mm in .5mm increments.