postion
Definition If the tolerance value is preceded by the ∅ sign the tolerance zone is limited by a cylinder of diameter t the axis of which is in the theoretically exact position of the toleranced element.
Definition If the tolerance value is preceded by the ∅ sign the tolerance zone is limited by a cylinder of diameter t the axis of which is in the theoretically exact position of the toleranced element.
Example The axis of the toleranced bore shall be contained within a cylinder of diameter 0.02, the axis of which is in the theoretically exact position with respect to the surfaces B and C. Note For the positional tolerances of a point or a plane, see ISO 1101.