1.1 This standard specifies the dimensions, spacing and position of the holes made in sheets of paper or documents, in order to permit their filing in ordinary files.
1.1.1 This standard applies to sheets or documents like, correspondence, standards, thin documents, that can be perforated in an office with a simple punch.
1.1.2 In general, it does not apply to sheets or documents like, loose leaf binders, special filing systems.
IS 10287-1982 history
1983IS 10287-1982 Specifications for filing holes in plain paper