Stock photography, photos: Blue Clock Stock photos of Vertical color image of a blue clock Photograph: © Dieter Melhorn Click for a larger image and more information Keywords associated with this stock photo: clock, time, minutes, hours, numbers, ticking, punctuality, punctual, prompt, accurate, deadline, symbol, concept, metaphor, schedule, clock, hands, Precise, Precision, Ticking, Timing, accuracy, timepiece, working, hours, activities,