1、This electronic caliper ruler has the characteristics of high sensitivity, stable and reliable operation. 2、Its main components are made of special stainless steel, which has good wear resistance and rust resistance. 3、Because of its super high precision, it is widely used in all kinds of machining and gemstone measurement. 4、Using a special process of fine grinding, this electronic stainless steel caliper has a more refined and durable appearance. 5、The electronic original part of this caliper is equipped with a high‑quality chip to ensure that its readings and measurements are accurate. 1 x Caliper1 x Screwdriver1 x Storage Box1 x Manual Item Type: Digital CaliperMaterial: Stainless SteelPower Supply: 1 x 1.5V Button Battery(Delivered without Battery)Process: Fine Grinding Processing, Quality CoreUses: Widely used in various types of gemstone measurement and precision measurement of small workpieces.Standard: National Standard Industrial Product StandardSpecifications: Regular Size: Approx. 0-25mm/0- 1.0in Reading Value: 0.01mm