76 Pa.C.S. § 1105: Coordinates and distances.

(a) Coordinates.--The coordinates of a point on the surface of the earth, to be used for expressing the geographic position or location of the point in the appropriate zone of the Pennsylvania State Coordinate System, shall consist of two distances expressed in meters and decimals of a meter or International Feet and decimals of a foot.

(b) Distances.--

(1) One of the distances specified in subsection (a), which shall be known as the "east or x-coordinate," shall give the distance east of the y-axis. The other distance specified under subsection (a), which shall be known as the "north or y-coordinate," shall give the distance north of the x-axis.

(2) The y-axis of any zone shall be parallel with the central meridian of that zone.

(3) The x-axis of any zone shall be at right angles to the central meridian of that zone.

(4) An International Foot, which equals 0.3048 meters exactly, shall be used for all foot distances and coordinates unless the distances or coordinates are tied to one of the previous versions of the Pennsylvania State Coordinate System specified under section 1101(d) (relating to system).

(5) The U.S. Survey Foot, which equals 1200/3937 meters exactly or 0.3048006 meters approximately, shall be superseded by the International Foot as specified under paragraph (4) as determined by the National Institute of Standards and Technology.