Features Electronic Measurement: Accurately measure within the range of 0~300mm/12in with an accuracy of ±0.m/0.01in, ensuring readings for a wide variety of measurement needs. Quick-Change Functionality: Easily switch between inch/metric units with the quick-change button and utilize the reset key for effortless measurement and enhanced usability. Aerospace-Grade Carbon Material: Crafted from aerospace engineering grade carbon, this caliper ensures that valuable items like jewelry or 3D printing are measured without risk of damage. Versatile Long Jaw Design: The long jaw design meets a wide range of measurement needs, making it ideal for both home DIY projects and professional use. Large LCD Screen: The extra-large LCD screen provides easy and clear readings, enhancing efficiency and accuracy for various tasks, whether on the job or at the worksite. Features: 1、The electronic measurement range is 0~300mm/12in with an accuracy of ±0.m/0.01in for 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.m/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) Package List 1 x Digital Caliper (Battery Not Included)