Surface measurement refers to the techniques used to determine the physical characteristics of a surface, such as its roughness, texture, and topography. This process is essential in various fields, including materials science, engineering, and manufacturing, as it helps assess the quality and performance of materials. Common methods for surface measurement include profilometry, which uses a stylus to trace the surface, and scanning electron microscopy (SEM), which provides detailed images at a microscopic level. Accurate surface measurement is crucial for ensuring that products meet specific standards and function as intended in their applications.