[Number]: Different from traditional calipers, this product is equipped with a 50mm*18mm large LCD screen to display the value, with a high resolution of 0.01 mm, which is very easy to read intuitively, allowing you to say goodbye to glasses and barely see the graduation / p> [ABS]: Made of ABS, sturdy and durable, ensuring a long service life; two units of millimeters and inches, suitable for users with different habits; automatic shutdown in 5 minutes to help you save battery [Precision adjustment]: The spiral precision adjustment knob ensures easy fine adjustment and more precise measurement, giving you a high accuracy of 0.03mm; you can measure small items such as jewelry, antiques, jade, etc. [Gage]: Compared with ordinary rulers, this product can not only measure length, but also gauge and depth, so you can measure round and cylindrical objects. More functions and better performance will satisfy You Advanced digital calipers can measure length, diameter, gauge and depth with high precision, suitable for measuring jewelry, antique jade and other small and easily scratched objects Features: Screw knob fine adjustment, easy to make fine adjustments, can measure very small objects No need to open it, it will display automatically value when you press the body Specifications: Material: ABS plastic + electronic components Size: 23.6 * 8 * 1.6 cm Measuring range: 0-150mm Screen size: 50 mm * 18 mm Resolution: 0.01 mm / 0.0005 inches Accuracy: 0.03 mm Unit: mm / inch operating temperature: 0 to 40 Certification : CE / FCC Power supply: 1.5 V button battery (not included) One-click conversion unit Two units of millimeter and inch Large LCD screen, easy to read. Two units of millimeter and inch, the smallest scale is 0.01 mm / 0.0005 inch. become very rich