2002GOST 30893.2-2002 Basic norms of interchangeability. General tolerances. Tolerances of form and position for features without individual tolerance indications
1981GOST 25069-1981 Basic norms of interchangeability. Unindicated tolerances of form and surface location
GOST 25069-1981 Basic norms of interchangeability. Unindicated tolerances of form and surface location was changed to GOST 30893.2-2002 Basic norms of interchangeability. General tolerances. Tolerances of form and position for features without individual tolerance indications.