Feature: 1. Hardened stainlesssteel vernier caliper is sturdy and not easy to break off. 2. Internal, external and height can be easily and accurately measured 3. Its measure range is300mm, and it can be used for precise measurement. 4. Easy operation, it is widely used for small machine parts measurement. 5. With clear calibration on the caliper, easy to read. Specification: Product Features: External & Internal Measuring Jaw Locking Screw Large LCD Display Linear Capacitive Measuring System Depth Measuring Blade 0 Setting at any point Stepped Measuring Faces Easy to change battery(Not included). Hard Plastic Case Hardened Stainless Steel 0 to 300 mm measuring range 0.01mm Resolution 0.02 mm/0.001 Inch Accuracy up to 100 mm 0.03 mm/0.001 Inch Accuracy 100 to 300 mm Package Includes: 1 x 300mm Digital Vernier Caliper(Battery Not Included) 1 x User Manual Note: LCD Display will work as soon as you slide Caliper.It's not product quality problem.Hope you can understand! Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Package List: 1 x 300mm Digital Vernier Caliper(Battery Not Included) 1 x User Manual