[Premium Digital Caliper] This caliper tool is made of high quality stainless steel, which is dustproof, waterproof, impact resistant, rustproof hence it has a long service life. The digital calipers can measure depth/step/internal/outer diameter with two sets of jaws ( upper and lower ) and a depth probe. [High Accuracy] With a resolution of 0.001"/0.01mm and accuracy of 0.02mm, it can be applied to almost all home use scenarios. mm/in two measurement units can be converted for easy and accurate readings. Ideal for users who often work with overseas products. [Smoot-type Operation Method] sliding digital unit section automatically starts the power without pressing the on/off button. 5 minutes without any operation, the caliper automatically turns off, which is more energy-saving and environmentally friendly. It also prevents the power from being turned on accidentally. The movement of sliding part is very light. Equipped with zeroing function for comparison and indirect measurement. *The digital unit section can be slid by loosening the set screw. [Large LCD Display] The large LCD display is easy to read even for the presbyopic. Large characters make it ideal for DIY and carpentry tools. Improved anti-drop battery compartment is splash-proof and comes with battery plus two more batteries are included. Carefully handle the battery box screws. [After-sales Service] We are committed to providing customers with high-quality and practical tools. If you have any dissatisfaction with our products, please feel free to contact us, we provide return service within one year.