【STAINLESS STEEL MATERIAL】The vernier caliper is made of high-strength stainless steel and is waterproof and dirt-proof. The service life of this stainless steel digital caliper is longer than that of calipers with plastic or carbon fiber parts. Powered by battery, comes with a pre-installed battery and 2 spare batteries for gift. 【ACCURATE MEASUREMENT AND ZERO SETTING】This digital caliper glides smoothly. Measuring range: 0 -6" / 0-150mm; Accuracy: ± 0.001"/ 0.02mm; Resolution: 0. 0005"/0. 01mm. At the same time, the smart design allows you to easily reset to zero by pressing a button and start a new measurement at any point on the scale, which is very suitable for differential measurement. 【4 MEASUREMENT MODES】The digital caliper has 4 measurement modes, which can be used to measure inside and outside diameter, depth, and step with two sets of jaws and a probe. Multiple measurement modes can bring more usage scenarios to people, and the measurement process is also very convenient. 【UNIT CONVERSION & LARGER LCD SCREEN】These Digital Calipers have a one-key button to quickly switch from inches (inch), fractions (F), millimeters (mm). The 4" digital caliper has a large, easy-to-read LCD DISPLAY which is easy to use and read even under strong sunlight. It will automatically turn off after 5 minutes of non-use to save power. 【Wide Applications】 Compared to the ordinary rulers, this stainless steel caliper can measure not only length but also caliber and depth, allows you to measure circular and cylindrical objects, more functions and better performance will satisfy you. It has always been used by professionals and hobbyists alike, jewelers, hobbyists, woodworkers, machinists, DIY, automotive mechanics, and more. Precise measurement: Measurement range: 0 - 6''/0 - 150 mm; Resolution: 0.01”/0.1 mm; Accuracy: +/- 0.2 mm/0.01”. Perfect and accurate caliper measuring tool for household/DIY measurement. Choose stainless steel digital caliper for more accurate measuring 4 measuring modes: This digital caliper can be used to Measure inside and outside diameter, depth and step with two sets of jaws and a probe. Powered by battery, comes with a pre-installed battery and a spare battery Inch/mm conversion: One button quick switch between two units: inch and millimeter, definitely save your time. The buttons are made of rugged plastic carbon fiber composites, durable and portable Zero setting function: The smart design allows you to set zero with an easy touch of a button and start a new measurement at any point of the scale, ideal for differential measuring Large LCD screen & auto off: The large and easy-to-read LCD display helps you get precise results quickly and easily, auto shutdown for saving battery after 5 minutes if without operation Precise measurement: Measurement range: 0 - 6''/0 - 150 mm; Resolution: 0.01”/0.1 mm; Accuracy: +/- 0.2 mm/0.01”. Perfect and accurate caliper measuring tool for household/DIY measurement. Choose stainless steel digital caliper for more accurate measuring 4 measuring modes: This digital caliper can be used to Measure inside and outside diameter, depth and step with two sets of jaws and a probe. Powered by battery, comes with a pre-installed battery and a spare battery Inch/mm conversion: One button quick switch between two units: inch and millimeter, definitely save your time. The buttons are made of rugged plastic carbon fiber composites, durable and portable Zero setting function: The smart design allows you to set zero with an easy touch of a button and start a new measurement at any point of the scale, ideal for differential measuring