Zone boundaries.
Where uncertainty exists as to any of the boundaries as shown on the map, the following rules shall apply:
A. Zone boundary lines are intended to follow the center line of the streets, railroad rights-of-way, streams, and lot or property lines as they exist on plats of record at the time of the passage of this chapter, unless such zone boundary lines are fixed by dimensions shown on the Zoning Map.
B. Where such boundaries are not fixed by dimensions and where they approximately follow lot lines, and where they do not scale more than 30 feet distant therefrom, such lot lines shall be construed to be such boundaries unless specifically shown otherwise.
C. In unsubdivided land and where a zone boundary divides a lot, the location of such boundary, unless the same is indicated by dimensions shown on the map, shall be determined by the use of the scale appearing thereon.
