Feature: 1. The electronic measurement range is 0~300mm/12in with an accuracy of ±0.3mm/0.01in for precise readings in all your measurement needs. 2. This measuring tool has a quick‑change button that changes between inch/metric units, with reset key to facilitate measurement and use. 3. Aerospace engineering grade carbon, when measuring valuable items such as jewelry or 3D printing, it will not cause damage to the measured object. 4. Long jaw design, which can meet most of the measurement needs. Home DIY and professional use are both highly recommended. 5. It has an extra‑large LCD screen for easy and clear readings for faster efficiency and accuracy on the job or at the worksite. Specification: Item Type: Digital Caliper Material: Carbon Color: As shown in the picture Measuring Range: 0~300mm/12in Accuracy: ±0.3mm/0.01in Working Temperature: 0℃~40℃ Storage Temperature: -20℃~70℃ Battery Type: Button battery Battery Model: LR44 (Not included) Number of Batteries: 1pcs . Package List: 1 x Digital Caliper (Battery Not Included)