Multifunctional: Digital calipers can easily measure outer diameter, inner diameter, pitch, depth, etc. The zero function can recalibrate the caliper at any time for higher accuracy. The millimeter/inch conversion function can be adapted to the habits of different users. The on/off button function and the automatic closing function for 5-8 minutes can help you save battery life. [Technical Parameter]: Measuring range: 0-150 mm / 6 inches; Resolution: 0.1 mm / 0.01 inches; Accuracy: 0.2 mm; Operating temperature: 0-40 CHigh quality: This digital caliper is made of strong, lightweight and durable carbon fiber composite material, which can be used for a long time without deformation, which is more economical and lighter than stainless steel calipers. The edge of the digital caliper is not sharp and will not scratch people and objects. The digital calipers are insulated and can measure battery. The digital caliper slides smoothly with accurate results. [Large LCD Screen]: Compact and easy to carry. The large high-definition LCD screen, large fonts, can easily read real-time data. Simple operation, beginners can quickly learn to use. Usage Scenario: This product is a tool in daily life and is widely used in schools, homes, laboratories and factories.