Features 1、Accurate Reading: The digital caliper is convenient for quick reading, and the accurate value is 0.1mm digital display screen, clear at a glance, accurate reading. 2、Smart: Automatic power on measurement, intelligent power saving without automatic shutdown for a long time. 3、Inch MM Conversion: One key to quickly switch between two units: inches and millimeters, which will definitely save your time. 4、High Quality Materials: Made of sturdy carbon fiber composite material, durable and portable. 5、Purpose: Perfect and accurate caliper measurement tool, suitable for teaching experiment, home, DIY measurement. Specification Item Type: Vernier Caliper Material: Carbon Fiber Composite Material Battery: 1.5v 1 x LR44 (Battery Not Included) Purpose: Measuring the Length and Diameter of Objects Basic Parameters: Accuracy: Approx. 0.1mm, 0.01in Resolution: Approx. ±0.2mm, ±0.01in Package List 1 x Vernier Caliper (Battery Not Included)