Surface Metrology is the science of measuring the physical features of a surface. It involves assessing characteristics such as roughness, texture, and topography, which are crucial for various applications in engineering and manufacturing. Accurate measurements help ensure that surfaces meet specific standards and performance requirements. Techniques used in Surface Metrology include contact methods, like stylus profilometry, and non-contact methods, such as optical microscopy and laser scanning. These techniques provide valuable data that can influence product quality, durability, and functionality, making surface measurement an essential aspect of material science and industrial processes.