Item Type: Digital Caliper Material: Carbon Measuring Range: 0-150mm/6in Accuracy: 0.3mm/0.01in Working Temperature: 0-40 Storage Temperature: -20-70 Battery Type: Button Battery Battery Model: 3V CR2032 (Battery Not Included) Number of Batteries: 1Pc 1Carbon digital caliper, aerospace engineering grade material, durable to use and wearresistant, antirust, longterm use. 2With metric/inch conversion key and reset key for quick conversion during measurement, suitable for DIY measurement. 3It is safe and reliable. When measuring precious items such as jewelry or 3D printing, it will not cause damage to the measured object. 4Equipped with a large LCD display, it is convenient to read the measured data results, and it is easy to operate and use. 5Portable digital caliper, measuring range is 0-150mm, accuracy is 0.3mm, with high accuracy and small error, easy to carry around.