Sec. 1. The most recent system of plane coordinates established by the NGS, based on the NSRS, and known as the SPCS, for defining and stating the geographic positions or locations of points on the surface of earth within Indiana shall be known as the "Indiana Plane Coordinate System". As added by P.L.147-2026, SEC.18.
Designation of Indiana Plane Coordinate System
Ind. Code § 32-19.5-2-1, under Designation of the Indiana Plane Coordinate System; Zones.
Ind. Code § 32-19.5-2-1