Affordable and search from millions of royalty free images photos and vectors. Huge collection amazing choice 100 million high quality affordable rf and rm images. It is believed that they may be among the oldest of devices used to keep time since written accounts of them date to.
Water clocks are one of the oldest time measuring.
It is not as accurate as most modern time keeping devices but when these clocks were first developed they were quite adequate for the times. Water clocks are one of the oldest time measuring. Around 325 bc water clocks began to be used by the greeks who called this device the clepsydra water thief. No need to register buy now.