The size of each sheet shall be eighteen by twenty-six inches. A marginal line shall be drawn completely around each sheet, leaving an entirely blank margin of one inch. The scale of the map shall be large enough to show all details clearly and enough sheets shall be used to accomplish this end. The particular number of the sheet and the total number of sheets comprising the map shall be stated on each of the sheets, and its relation to each adjoining sheet shall be clearly shown. (Ord. 244 § 3 (part), 1967: Ord. 89 § 3.12(b), 1955).