IS 8000 Pt.1-1976

标准号：IS 8000 Pt.1-1976
发布日期：1977/2/1 12:00:00
实施日期：1999/12/31 12:00:00
适用范围：This standard specifies the symbols for tolerancing of form and of position and the method of their indication on general engineering drawings.1.1 These tolerances of form and of position are to be specified only where they are functionally essential.1.2 When only a tolerance of size is specified, this tolerance also limits certain errors of form and of position. The actual surfaces of the manufactured part may then deviate from the specified geometrical form on condition that they remain within the tolerances of size. If the errors of form shall remain within other limits, a tolerance of form shall be specified.1.3 A tolerance of form or of position may be specified even if no tolerance of size is given.1.4 The indication of tolerances of form and of position does not necessarily imply the use of any particular method of production, measurement or gauging.