The vernier caliper is made of high-strength stainless steel, which is waterproof and dustproof. The service life of this stainless steel digital caliper is longer than calipers with plastic or carbon fiber components. Powered by batteries, comes with pre installed batteries and 2 spare batteries as gifts. This digital caliper slides smoothly. Measurement range: 0-6 "/0-150mm; accuracy: 0.001"/0.02mm; Resolution: 0. 0005"/0. 01 millimeters. Meanwhile, intelligent design allows you to easily reset to zero by pressing a button and start a new measurement at any point on the ruler, which is perfect for differential measurement. The digital caliper has four measurement modes, which can be used to measure inner and outer diameters, depth and step, with two sets of jaws and one probe. Multiple measurement modes can bring people more usage scenarios, and the measurement process is also very convenient. These digital calipers have a one click button that allows for quick switching between inches, fractions, and millimeters. The 6-inch digital caliper has a large, easy to read LCD display, making it easy to use and read even in strong sunlight. It will automatically shut down after 5 minutes of inactivity to save power. Compared with ordinary rulers, this stainless steel caliper can not only measure length, but also caliber and depth, and can measure circular and cylindrical objects. More functions and better performance will meet your needs. It has been used by professionals and hobbyists, jewelers, hobbyists, carpenters, mechanics, DIY, automotive mechanics, and more.