Professional Industrial Vernier Caliper Carbon Steel Precision Measurement Four Use Metric Precision Measuring Tool Features: 1.Real materials, precision quality. 2.Carbon steel measuring claw, internal and external diameters can be measured. 3.Metal push block, comfortable to handle, easy to use. 4.Fastening screw, locking position, convenient for observation. 5.Laser scale, accurate scale, not easy to wear. 6.Tail gauge, built-in gauge, measuring depth. Specification: Material:carbon steel Product size:As the pictures show Measuring range: 150mm Package Includes: 1* Digital Vernier Caliper Notice: 1.Please allow 1-2mm differs due to manual measurement. 2.Due to the different display and different light, the picture may not reflect the actual color of the item. Thanks for your understanding. Note: The total length of the scale bar of a 50-degree vernier caliper is 49mm, while the main scale is usually 50mm. The spacing between each grid on both the scale bar and the main scale is 0.02mm (with an accuracy of 0.02mm).