The manual complies with the state educational standard of the discipline "Measures, standardization and certification". The manual discusses the main approaches to the rational selection of tolerances and fits of smooth cylindrical and other standard connections; issues of construction and calculation of dimensional chains. The basic provisions necessary for the execution of drawings of machine parts are given; examples of drawings of typical machine parts, calculation and selection of tolerances for location, shape and surface roughness, as well as the necessary regulatory data.