LARGE LCD SCREEN & GIFT: High quality Stainless Steel digital vernier caliper, the large and easy-to-read LCD display helps you get precise results quickly and easily, auto turn the digital vernier caliper on when you slide the rail and auto shut off after 5 minutes without using. Powered by battery, comes with a pre-installed battery PRECISE MEASUREMENT: Measurement range: 0 - 6''/ 0 - 150mm; Resolution: 0.01/ 0.1mm; Accuracy: 0.2mm/0.01. Perfect and accurate caliper measuring tool for household/DIY measurement. Please choose stainless steel digital caliper for more accurate measuring. Inside diameter, outside diameter, depth, and step 4 ways measure. The digital caliper is only for household measurement, such as jewelry, gadgets and other household objects. If for industrial measurement, please buy a more professional and more accurate measuring tool in professional field. TWO UNIT CONVERSION & ZERO SETTING FUNCTION: One button quick change between two measuring modes: inch and millimeter. 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, satisfying your needs. The digital caliper is only for household measurement, such as jewelry, gadgets and other household objects. If for industrial measurement, please buy a more professional and more accurate measuring tool in professional field, also for Fathers Day Gifts