Features • Premium Carbon Steel Construction - Crafted from high-quality carbon steel for enhanced durability and a long service life, ensuring reliable performance for all your marking needs • High Precision Measurements - Designed for exceptional accuracy, our calipers provide measurements every time, making them ideal for both profional and DIY projects • Versatile Application - for mechanical proces and leather crafting, this tool is a must-have for artisans and engineers looking for dependable marking solutions • Stable and Efficient Performance - Engineered for stability during use, this caliper offers consistent performance, minimizing wear and tear for extended usability • Easy Handling Design - With a user-friendly design, the leg spring calipers facilitate comfortable use, allowing you to focus on the task at hand without fatigue Features: 1、100% and high-quality. 2、It is made of premium carbon steel, and has long service life. 3、High accuracy and not easy to wear and tear while using. 4、It is suitable for mechanical proc and making leather. 5、It is stable and has great performance while using. Specification: Features: 100% and high-quality. It is made of premium carbon steel, and has long service life. High accuracy and not easy to wear and tear while using. It is suitable for mechanical proc and making leather. It is stable and has great performance while using. Specification: Type:AL1068 Material:Carbon Steel Size(Optional): 140mm / 5.5in 190mm / 7.5in 230mm / 9.1in Package List: 1*Outside Spring Caliper Package List