![]() ISO 2768 - General Geometrical Tolerances and Technical Drawings. ![]() ISO 2768 consists of the following parts, under the general title General tolerances- Part 1- Tolerances for linear and angular dimensions without individual tolerance indications - Part 2- Geometrical tolerances for features without individual tolerance indi cations Annex A of this part of ISO 2768 is for information only. When applied to a surface It creates a 2-dimensional bilateral tolerance zone of two parallel curves around the true surface or feature profile to be controlled. Profile of a line control tolerance in gdt is a type of profile control tolerance, that controls the size, orientation, location and form of a feature simultaneously. ![]() ISO 2768 is mainly for parts that are manufactured by way of machining or removal of materials. ISO 2768 and derivative geometrical tolerance standards are intendedto simplify drawing specifications for mechanical tolerances. Iso 2768 hole tolerance Iso 2768 hole toleranceĪll tolerance limits are given in mm.
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