Size:245X90X22 mm Absolute accurate in measurements & conversions - 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. Simple & comfortable to use - Designed for home, DIY and professional using, this tool is so simple but incredibly precise that childs can use it too. Ergonomically design provides a comfortable grab in the hand and features a large LCD display. The measuring faces adjust with a machine-grooved, knurled thumb roller that provides an easy gliding, accurate position lock for a sure adjustment. Instant conversion between readings eliminates the headache of doing your own math. Compact, convenient & top quality - 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. Heart to heart service - 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.