?Stainless Steel Material IP54 Splash Proof?The IP54 digital caliper crafted from premium stainless steel that is sturdy, splash proof, anti-rust, which ensures the calipers can withstand the demands of frequent use in various environments, making it suitable for designers, engineers, auto mechanics, architects, carpenters, woodworkers, DIY, jewelers, also user-friendly for beginners and hobbyists ?Precision Measurement Large LCD Screen?The vernier caliper Measuring Range: 0 - 6''/ 0 - 150 mm; Accuracy: 0.001?/0.02mm and Resolution: 0.0005"/0.01mm. The large LCD screen displays measurements clearly and prominently, ensuring readability in any lighting conditions, while the zero function allows for easy calibration and reference measurements ?3 Units Conversion Auto-off Feature? You can switch 3 units with the calipers: inch, mm and fraction with the push of a button. Press the on/off button, slide the digital caliper to anywhere, then you can read the values on the display. And it will automatically turn off after 5 minutes of non-use to save power ?Ergonomic Design Long Battery Life?Designed for ease of use, the Aurdeayi caliper measuring tool features a sleek and ergonomic design with a comfortable grip for extended use. The CR2032 environmental battery life is more longer than the LR44, you don't need to change battery for 12 months, and package includes extra 2 button cells ?4 Measuring Modes Versatile Applications?Whether measuring internal dimensions, external dimensions, depth, or step dimensions, the IP54 micrometer offers versatile functionality for a wide range of applications. From woodworking and metalworking to automotive repairs and electronics, this caliper provides accurate measurements for precise cutting, fitting, and assembly, making it an indispensable tool for professionals and hobbyists alike