1. ISO 1101 (2014) Geometrical product specifications (GPS): geometrical tolerancing – tolerances of form, orientation, location and run-out. International Organization for Standardization (ISO), Geneva
2. ISO 14253–1 (2013) Geometrical product specifications (GPS): inspection by measurement of workpieces and measuring equipment – part 1: decision rules for proving conformity or nonconformity with specifications. International Organization for Standardization (ISO), Geneva
3. ISO 14253–2 (2011) Geometrical product specifications (GPS): inspection by measurement of workpieces and measuring equipment – part 2: guidance for the estimation of uncertainty in GPS measurement, in calibration of measuring equipment and in product verification. International Organization for Standardization (ISO), Geneva
4. ISO 4287 (1997) Geometrical product specifications (GPS): surface texture – profile method: terms, definitions and surface texture parameters. International Organization for Standardization (ISO), Geneva
5. ISO 8015 (2011) Geometrical product specifications (GPS): fundamentals – concepts, principles and rules. International Organization for Standardization (ISO), Geneva