Keep accurate measurements with the General Tools 722 Vernier Caliper! Whether you need inside, outside, depth, or step measurements in inches or millimeters, this caliper has you covered. The caliper lock and slide lock make repetitive measuring a breeze, while the friction roller ensures smooth adjustments. With a 0-5”/125mm range and graduations of every mm and 16th of an inch, this tool will meet your most demanding requirements.