The final plat shall be prepared by a registered professional surveyor and legibly drawn in waterproof ink on tracing cloth or other material of equal permanence. It shall be drawn at a scale not less than 100 feet to the inch and shall be one or more sheets 24" x 36" in size. When possible, a scale of one inch equals 50 feet should be used. When more than one sheet is required, an index sheet of the same size shall be filed showing the entire subdivision with the sheets lettered in alphabetical order as a key. (Ord. K-5-94-2. Passed 5-9-94.)