ITEM NAME:3.25" 80mm Brass Vernier Caliper Gauge Sliding Gem Bead Tool Jewelers Inche N2Y4 3.25" 80mm Brass Vernier Caliper Gauge Sliding Gem Bead Tool Jewelers Inche N2Y4 Material: Solid Brass Metal Precision sliding brass gague measures up to 3.25" (80mm) in increments of 1/16" (1mm). Vernier Design will measure inside and outside of object. Easy to read numbers Ultra precision and effortless operation This item is 3.25" (80mm) Precision Sliding Brass Gauge Caliper. It is a indispensable tool for Jewelry Designers,or when you are going to bead shows. Package Includes: 1 x Brass Metal Sliding Gauge Caliper Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.