Micromat Gemstone Gauge

A precision dial caliper used by jewelers, appraisers and cutters the world over to accurately estimate weights of gemstones and pearls. Takes both inside and outside measurements in millimeters.

Features specially designed jaws that fit inside stone settings and prongs for precise measuring without requiring you to remove stones first. Also has ring size scale for reading USA sizes of rings placed in jaws.

Includes attractive leatherette-covered metal case with thorough 42-page booklet of tables and complete instructions fully translated in three languages: English, French and German.