Features Large LCD Display This digital internal caliper uses a large LCD screen to display the value, which is fast and clear to read. ALLOY JAW: This internal caliper with digital display uses alloy jaws with chrome finish, which is strong and wear-resistant and not easy to damage. Metric and English Unit Conversion: This digital display has a unit conversion button on the internal meter of the card, and the short button can be used for metric and English conversions (F for fraction function). LOCKING SCREW - This digital display has a locking screw inside the gauge that locks clockwise to the current position and loosens counterclockwise to unlock it. Wide Application This internal gauge with digital display is widely used and mainly used to measure the internal diameter of all kinds of machining. 1. Large LCD Display This digital internal caliper uses a large LCD screen to display the value, which is fast and clear to read. 2. ALLOY JAW: This internal caliper with digital display uses alloy jaws with chrome finish, which is strong, wear-resistant and not easy to be damaged. 3. Metric and English Unit Conversion: This digital display has a unit conversion button on the internal meter of the card, and the short button can be used for metric and English conversions (F for fraction function). 4. LOCKING SCREW - This digital display has a locking screw inside the gauge that locks clockwise to the current position and loosens counterclockwise to unlock. 5. Wide Application This internal gauge with digital display is widely used and mainly used to measure the internal diameter of all kinds of machining. Specification: Item Type: Digital Inner Caliper Battery: CR2032 3V x 1 button cell (supplied without battery) Specification: Approx. 12.7-216mm/0.5-8.5inch Reading value: approx. 0.1mm/0.005inch Accuracy error: Approx. 0.2mm/0.01inch Clear reading, small and exquisite, convenient to use Paper: widely used in various types of internal diameter measurement machining. How to use: Direct measurement operation. Packing List: 1 x Digital Inner Caliper Package List 1 x Digital Inside Caliper