Every Class B permittee and Class C liquor licensee shall provide a means of viewing at least eighty percent (80%) of the total interior of the area within which beer, wine, or liquor is sold or consumed. The means of viewing shall be clear glass, unobstructed, no less than eighteen inches (18") square, and shall be located in such a manner that an individual of average height can observe activities within, from the exterior of the area within which beer, wine, and/or liquor is sold or consumed. (1975 Code § 3-1-20; amd. 1977; 1998 Code)