19.03.2007, Hamburg, Hamburg, Germany - Sandglasses measuring time. (hour glass, hourglass, sand glass, sand timer, sand clock, clocks, timers, hourglasses, sandglasses, sand glasses, narrow, tube, sand, grains, bulbs, bottom, flow, flowing, clock, timer, yellow, green, red, three, experiment, research, science, scientifically, scientific, measurement, measuring, measure, time, precision, precise, symbol, symbolic, race against time, race against the clock, past, present, future, passing, passing of time, background, studio shot, nobody, three, vertical) 00W070319D005CAROE.JPG [MODEL RELEASE: NOT APPLICABLE, PROPERTY RELEASE: NO (c) caro images / Westermann, http://www.caro-images.com, [email protected] - In case of using the picture for any non-editorial purpose, please contact the agency - the picture is subject to royalty!]