LARGE LCD SCREEN & GIFT: High quality 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 and 2 spare battery for gift. | 4 MEASURING MODES: Sangabery digital vernier caliper can be used to measure inside and outside diameter, depth and step with 2 sets of jaws and a probe. Made of high quality, durable plastic carbon fiber composites, this digital vernier caliper is durable and portable. | 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. | PRECISE MEASURMENT: 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, et. Please note it's not for technical grade extreme accuracy professional use. | SERVICE POLICY: Backed by a Sangabery carefree service for every purchase. If you don't like this product, contact us, we promise to refund unconditionally.