This International Standard specifies the standard reference temperature for geometrical product specification and
verification.
BS EN ISO 1:2002 history
2022BS EN ISO 1:2022 Geometrical product specifications (GPS). Standard reference temperature for the specification of geometrical and dimensional properties
2016BS EN ISO 1:2016 Geometrical product specifications (GPS). Standard reference temperature for the specification of geometrical and dimensional properties
2002BS EN ISO 1:2002 Geometrical Product Specifications (GPS) - Standard reference temperature for geometrical product specification and verification