District boundary lines shall follow street center lines or lot lines or extensions of and from the same, as such street and lot lines exist at the time of the adoption of this chapter, unless such district boundary lines are referenced by some street line dimension shown on the Zoning Map. Where the boundary of a district follows a stream, lake, bay or other body of water, said boundary line shall be deemed to be at the limit of the jurisdiction of the Village of Roslyn Harbor unless otherwise indicated.

If a district boundary line is not thus referenced or there is doubt in a particular instance as to what line is determining, the location of such district boundary line shall be determined by the Building Inspector by scaling the Zoning Map. An appeal from such determination may be taken to the Zoning Board of Appeals.

Uses permitted in one district may not extend into another district where they would not otherwise be permitted.

Dimensional requirements shall be measured from lot lines and not zoning district lines.