Use of the terms "Ohio co-ordinate system of 1927, north zone," or "Ohio co-ordinate system of 1927, south zone," on any map, report of survey or other document shall be limited to co-ordinates based on the "Ohio co-ordinate system of 1927" as defined in this chapter.
Ohio co-ordinate system of 1927
Ohio Rev. Code Ann. § 157.10, under Chapter 157 | Ohio Co-ordinate System.
Ohio Rev. Code Ann. § 157.10