“precinct”

internetjob

internetjob Sunday, May 25, 2014 Refresh selections edit Selected article history of timekeeping devices The history of timekeeping devices begins thousands of years ago with the invention of the sexagesimal system of time measurement in approximately 2000 BC, in Sumer. The Ancient Egyptians divided the day into two 12-hour periods and used large obelisks to track the movement of the Sun. They also developed water clocks, which were probably first used in the Precinct of Amun-Re, and later