A contact profilometer is a precision instrument used to measure the surface profile of an object. It works by dragging a fine stylus across the surface, which records the height variations as it moves. This data is then converted into a detailed graph, showing the surface roughness and texture. These devices are commonly used in manufacturing and quality control to ensure that surfaces meet specific standards. By providing accurate measurements, contact profilometers help in assessing the performance and durability of materials in various applications, including automotive, aerospace, and electronics industries.