Where such boundaries are indicated as approximately following the center lines of streets, alleys, railroads, waterways, the boundary lines of parks of other publicly owned land, or Township limits, such lines shall be construed to be such boundaries.

Where such boundaries are indicated as approximately following the lines of lots or other parcels of record and are not more than 10 feet distant there from, such lot or parcel lines shall be construed to be such boundaries.

Where a District boundary divides a parcel of land, 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.

In cases of doubt, the district boundary line shall be determined by the Board of Adjustment.