The Outside Depth Gauges Collection is specifically designed for accurately measuring the depth of slots, holes, recesses, and grooves. Built with hardened materials, stable bases, and finely graduated scales, these gauges provide dependable results in both workshop and industrial environments. They are essential tools for machinists, toolmakers, and engineers who need reliable depth verification in precision machining tasks. Their simple operation and rugged design make them suitable for repetitive use, while their high accuracy ensures confidence in critical measurements. Whether in manufacturing, quality control, or engineering inspection, these depth gauges offer the perfect balance of reliability and precision.