Durable stainless steel construction provides long lasting reliability and stable measurements, resisting erosion for daily workshop use. accuracy: 020 mm measuring range with 0.5 mm graduation, delivering precise and repeatable results with each use. Versatile design: adapts to a wide range of drilling depths and is suitable for wood, metal, and other materials, supporting diverse applications. Portable and lightweight: compact stainless steel gauge that is easy to carry and use on the go, enabling on site sharpening whenever needed. Woodworking use scenario: check and sharpen drill bits before drilling to achieve accurate, clean holes in wood projects. Metalworking use scenario: verify and sharpen bits to maintain consistent hole sizes in steel or aluminum. Field maintenance scenario: keep in your toolkit for quick on site sharpening and measurement checks when working away from the .