【ACCURATE MEASUREMENT & EXTRA LARGE LCD SCREEN】Measuring range: 0 -6" / 0-150mm; Accuracy: ± 0.001"/ 0.02mm; Resolution: 0. 0005"/0. 01mm. This caliper measuring tool slides smoothly, digital caliper has a extra large LCD DISPLAY which is easy to use and read even under strong sunlight. Besides, It will automatically turn off after 5 minutes of non-use to save power. | 【STAINLESS STEEL MATERIAL】The digital caliper adopts 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. | 【UNIT CONVERSION & ZERO SETTING】The Vernier Calipers have a one-key button to quickly switch from inches (in), millimeters (mm), fractions (F). Smart design allows you to easily reset to zero by pressing "ZERO" button and start a new measurement at any point on the scale, which is very suitable for differential measurement. | 【4 MEASUREMENT MODES】The caliper tool has 4 measurement modes, which can be used to measure internal and external measuring, 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. | 【WIDE APPLICATIONS】Compared to the ordinary rulers, this 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.