Surface roughness and size tolerance

Abstract A new tentative standard has been developed which shows an empirical relation between the surface roughness and ISO tolerance. This relation is based on published research and on existing standards. The range of application is for sizes up to 10000 mm and for tolerance grades 4–6. The new standard is available to industry. Measurements in various Austrian factories are expected to give information regarding the practicability of the standard for workshops and design offices.