The 40-inch Vernier Caliper by Field Tool Supply is a robust measuring tool designed for high precision in various industrial applications. Constructed from durable stainless steel, it offers excellent resistance to corrosion and wear. The caliper features a clear scale for easy reading and a smooth sliding mechanism for effortless operation. With the ability to measure both internal and external dimensions, this caliper is perfect for engineers and machinists. It meets stringent industry standards, ensuring reliability and accuracy in every measurement.