No person controlling, leasing, acting as agent for, conducting, managing or carrying on any restaurant, hotel, cafe, cafeteria, or other public place where food is sold, served or offered for sale or service, shall conduct or operate any such restaurant, hotel, cafe, cafeteria or other public place where food is sold, served or offered for sale or service, unless said person owning, controlling, leasing, acting as agent for, conducting, managing or carrying on any such restaurant, hotel, cafe, cafeteria, or other public place where food is sold, served, or offered for sale or service, shall cause to be conspicuously displayed and maintained at all times a menu, bill of fare, card or other form or device which shall clearly indicate to the purchaser the price of the article of food to be sold or served, which said menu, bill of fare, card or other like form or device, shall be so placed, displayed and maintained as to be clearly within the vision of the purchaser of said article or articles of food at the time such food is ordered, provided, however, that in all public places where the sale or service of food is effected by permitting the purchaser of said food to view the same, and order directly therefrom each kind of food to be sold or served shall be provided with a card, ticket, tag or other like form or device which shall be conspicuously displayed immediately adjacent to said kind of food and shall clearly indicate the price of the particular kind of food immediately adjacent thereto.