Revised Standard from Last Update.

NATIONAL FOREWORD

This Indian Standard (Part 3) (Third Revision) which is identical with ISO 1660 : 2017 ‘Geometrical product specifications (GPS) — Geometrical tolerancing — Profile tolerancing’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on recommendation of the Drawings Sectional Committee and approval of the Production and General Engineering Division Council.

This standard was originally published in 1976 and subsequently revised in 1985 and 1992. The original standard was based on ISO 1660 : 1971. First revision of this standard was identical with ISO 1660 : 1982. Second revision of this standard was identical with ISO 1660 : 1987. The third revision of this standard has been undertaken to align it with the latest version of ISO 1660.