The two methods of using Position discussed on this page will be RFS or Regardless of Feature Size and under a material condition ( Maximum Material Condition or Least Material Condition).
Position is one of the most useful and most complex of all the symbols in GD&T. In other words, the Geometric Dimensioning and Tolerancing “Position” tolerance is how far your feature’s location can vary from its “True Position”. The “ True Position” is the exact coordinate, or location defined by basic dimensions or other means that represents the nominal value. True Position, or just Position as the ASME Y14.5 standard calls it, is defined as the total permissible variation that a feature can have from its “true” position.
