The boundaries between base districts are, unless otherwise indicated, either the center lines of streets, lanes, watercourses, and rights-of-way of power lines and other public utilities, or such lines extended, or lines parallel thereto. Where uncertainty exists as to the location of any of the said boundaries as shown on the Zoning Map, the following rules shall apply:
A. Where a district boundary is indicated as approximately following the center line of a street, lane, or watercourse, or right-of-way of a power line or other public utility, such center line shall be construed to be such boundary.
B. Where a district boundary is indicated as approximately following a lot or other property line, such lot or property line shall be construed to be such boundary.
C. Where a district boundary divides a lot or runs through undivided property, the location of such boundary, unless otherwise specified by figures on the Zoning Map, shall be determined by the use of the scale appearing on said map.
D. Where figures are shown on the Zoning Map between a street and a district boundary they shall indicate that the district boundary runs parallel to the street line at a distance therefrom equivalent to the number of feet as indicated, unless otherwise specified. Where scaled distances do not agree with such figures, the figures shall control.