Come and see our amazing products. This vernier caliper allows you get the accurate data by using internal, external, step and depth measurements in inches and millimeters. Calibrated to within 0.0005 inches or 0.01mm. Fix the faces in place and set to zero for different measurements. Adtionally fetures automatic power off. This 6 inch (150mm) caliper is small enough to fit in your pocket. As for the price? We promise our vernier calipe is crafted in hardened stainless steel with no plastic parts, stronger than other's brand. It is guaranteed against water, dirt and oil damage. Packaged in a heavy-duty moulded case, this digital measuring tool comes with a replacement ultra-longlife battery and a screwdriver to change it. The kit works right out of the box and comes with a detailed user manual. Pls confirm further with us if any query about packing info, inventory status and time schedule.