A profilometer is a specialized instrument used to measure the surface profile of materials. It can assess roughness, texture, and other surface characteristics by tracing a fine stylus or using optical methods. Profilometers are essential in various industries, including manufacturing and quality control, to ensure that surfaces meet specific standards. There are two main types of profilometers: contact and non-contact. Contact profilometers use a physical probe to touch the surface, while non-contact profilometers utilize light or laser technology to gather data without direct contact. Both types provide valuable information for improving product quality and performance.