353.06  INSTALLATION AND OPERATION OF METERS.
   Parking meters installed in any parking meter zones shall be placed next to each designated individual parking space, and in such manner as to show or display by a signal that the parking space controlled by such meter is or is not legally occupied.  Each parking meter shall indicate by a proper legend the established legal parking time.  When parking meters are in operation, they shall indicate on or by a dial or pointer the duration of the period of legal parking and any illegal or overtime parking.
(1967 Code 353.06)