Features: Measuring range 0 - 150 mm; Resolution 0.02 mm;Error 0.06 (caliber). You can use the vernier caliper to accurately measure internal, external, pitch and depth dimensions. Carbon steel material and no battery needed. An for ideal tool for life for time use. Suitable for jewelry measurement, school, exhibition gifts, antique measurement, etc. Come with plastic storage for case for carry and keep vernier caliper. Specifications: Material: Carbon Steel Box Size: approx 24x9x2cm/9x3.5x0.8in Resolution: 0.02mm Error: + / - 0.06 mm Range: 0~150mm Note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1X Vernier Caliper