标准号:IS 3221-1966
发布日期:1966/9/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:This standard specifies the types, sizes and number of drawing instru-ments which comprise a set of drawing instruments of the following types:a) Drawing Instrument Set — General,b) Drawing Instrument Set — Engineers', andc) Drawing Instrument Set — Utility.