Where uncertainty exists with respect to the boundaries of the various districts as shown on the zoning map, the following rules shall apply:
A. The district boundaries are either streets or alleys, unless otherwise shown, and where the designations on the zoning map indicate that the various districts are approximately bounded by street or alley lines, such streets or alleys shall be construed to be the boundaries of such district.
B. Where the district boundaries are not shown to be streets or alleys and where the property has been or may hereafter be divided into blocks and lots, the district boundaries shall be construed to be the lot lines, and where the designations on the zoning map indicate that the various districts are approximately bounded by lot lines, such lot lines shall be construed to be the boundaries of such districts.
C. Where the district boundaries are not shown by streets or alleys or lot or block lines, the district boundaries shall be determined by use of the scale shown on the map. (Ord., 5-13-1968)