Which tool is used for measuring surface roughness during inspection?

The surface roughness tester is specifically designed for assessing the texture of a surface at a microscopic level, which is crucial in various manufacturing and engineering processes. This tool offers precise measurements that indicate the roughness of a surface, often through parameters such as average roughness (Ra), root mean square roughness (Rq), or maximum height of the profile (Rz).

Unlike calipers or micrometers, which primarily measure dimensions such as length, width, or thickness, a surface roughness tester provides detailed information about the characteristics of a surface's finish. This is essential in applications where surface finish impacts functionality, wear resistance, and aesthetic qualities. The measuring tape, being a more general measurement tool, lacks the specificity and precision needed for evaluating surface texture. Thus, the surface roughness tester represents the most appropriate choice for measuring surface roughness during inspection.