What is the difference between gauge and fixture?

A gauge is a tool used to measure or compare the dimensions, spacing, or physical properties of an object to ensure it meets specified standards. In contrast, a fixture is a device that holds, supports, or locates a workpiece during manufacturing or assembly processes, ensuring accurate positioning and stability. While gauges focus on measurement and verification, fixtures are primarily concerned with securing and aligning components for production. Both are essential in quality control and manufacturing processes.