PHOTOGRAPHIC AND REPRODUCING APPARATUS, EQUIPMENT AND SUPPLIES-NAMELY, FILM WASHING, RINSING, DRYING AND AERATING EQUIPMENT AND TANKS AND CONTAINERS THEREFOR, TENSION FRAMES FOR FILMS, PHOTOGRAPHIC COPYING, ENLARGING, REDUCING AND PROJECTING EQUIPMENT, BLUEPRINT MACHINES, BLUEPRINT DEVELOPING AND DRYING MACHINES, FILM HANDLING TONGS AND FILM EXPOSURE AND DEVELOPMENT TIMERS