No gasoline station shall be erected within 1,000 feet of any church, hospital, school or any other such type of public assembly building used by large numbers of people, or within 1,000 feet of an existing filling station, service station, or gasoline station. The method of measurement that shall apply shall be the "airline distance" measured from the nearest boundary of the premises upon which there exists such churches, hospitals, schools, or other types of public assembly, buildings or filling stations or service stations.