Where a district boundary line is not within a street or way and its location is not precisely indicated by dimensioned distances from known lines, and where the designation on the Zone Plan indicates such district boundary,
(a) Upon or approximately upon the boundary line of a recorded lot or separate parcel of land, the district boundary shall be construed to be such line of recorded lot or parcel of land;
(b) Other than as stated in subsection (a) hereof, its location shall be determined by use of the scale of the map.
(Ord. 1600. Passed 7-26-62.)