Feature: 1.Stainless Steel 100mm Boley Dental Gauge Vernier Caliper Originally designed for dentistry to measure tooth dimensions 2.Popular tool for dental,jewelry, hobby and shop use 3.Capacity 0.1mm to 100.0mm, marked in 0.1mm increments; engraved scale 4. 16-gauge stainless steel won't warp or bend; length overall 5-1/2" Can be used for both inside and outside-dimension measurements Packing list: 1 pc as above pictures sh