BS EN ISO 1101:2005 contains basic information and gives requirements for the geometrical tolerancing of workpieces.
It represents the initial basis and defines the fundamentals for geometrical tolerancing.
BS EN ISO 1101:2005 is a geometrical product specification (GPS) standard and is to be regarded as a general GPS Standard. It influences chain links 1 and 2 of the chain of standards on form, orientation, location and run out, and chain link 1 of the chain of standards on datums.