What is the main purpose of a weld gage?

A weld gage is primarily used to measure the size and profile of a weld. This tool is essential in ensuring that welds meet specified dimensions and conform to required standards for strength and integrity. Accurate measurements help assess whether the weld has been applied correctly and whether it adheres to design and project specifications. The size and profile of the weld directly affect the performance characteristics of the welded joint, making this measurement crucial for maintaining quality control in welding processes.

The ability to measure weld dimensions helps in identifying issues such as undercutting, inadequate reinforcement, or excessive weld throat thickness, which could compromise the joint's mechanical properties. Thus, the weld gage serves as a vital tool in the quality assurance process during welding applications.