The GR 0.7787 13/16-20 CL2A GO gauge from Field Tool Supply is a precision tool designed for checking the accuracy of threaded holes. With a 13/16-20 thread size, this gauge ensures that your threads meet industry specifications and standards. Constructed from high-quality materials, it provides durability and reliability in various applications. This GO gauge is essential for quality control in manufacturing and machining processes, ensuring that components fit together correctly and function as intended. Ideal for professionals in need of precise measurement tools.