All permitted signs shall be measured as follows:

(a) Area

Measured in square feet, the entire area within a square, rectangle, circle, triangle or any other polygon enclosing the extreme limits of graphic, writing or similar representation, emblem or any fixture of similar character, together with any frame or other material or color forming an integral part of the display or used to differentiate the sign from the background against which it is placed; excluding the necessary supports or uprights on which such sign is placed. Where a sign has two or more faces, the area of all faces shall be included in determining the area of the sign, except that where two such faces are placed back to back and a-re at no point more than two (2) feet from one another, the area of the sign shall be taken as the area of the one face if the two faces are of equal area, or as the area of the larger face if the two faces are of unequal area.

(b) Height

Measured in feet, the overall height of a sign is measured from the grade directly below the sign to the highest point of the sign or any of its supports.

(c) Setback

Measured in feet from the outermost edge of the sign to the public right-of-way.

(d) Projection Over Public Right of Way

Measurement in feet, perpendicular to the property line, from the property line to the outermost edge of the sign, over any public right of way.

(e) Maximum Permitted Sign Area

In all Zones but the A and R Zones, the maximum permitted area for signs on a building shall be based on the building frontage. Where a building fronts on two or more streets, the total area for signs for each street frontage shall be based on the building frontage for that street. For gas stations, street frontage shall be used to calculate the permitted total area of signs as permitted in the tables. For any drive-in business that has a booth for employees only with no public access, including a gas station, the maximum area of signs shall be based on the street frontage, and on a comer lot, only one street frontage shall be used to calculate maximum sign area.