Roughness symbols and details refer to the visual representation and information provided about the surface roughness of a material or object. These symbols typically consist of a series of lines, curves, or textures that convey the level of roughness present on the surface. The details accompanying the symbols may include numerical values or specific descriptors that further specify the roughness characteristics, such as the degree of smoothness or irregularity. Engineers, designers, and manufacturers often use roughness symbols and details to communicate surface texture requirements, quality standards, or manufacturing specifications within technical drawings, plans, or documentation.