Clock with professional...
Greek water clocks An early prototype of an alarm clock was invented by the Greeks around 250 BC. The Greeks built a water clock, called a clepsydra, where rising water told the time and eventually struck a mechanical bird that set off an alarm whistle. The water filled a tank with an hour scale inside and flowed out through a hole in the base of the container. Clepsydras were more useful than sundials - they could be used indoors, at night and even under cloudy skies - but they were not as accurate. Greek water clocks became more accurate around 325 BC and were fitted with a dial with an hour hand, which made reading the clock more accurate and practical. Monastery clocks and clock towers The life of the Church, and in particular the monks who called others to prayer, made chronometers a necessity in daily life. The first clockmakers in medieval Europe were Christian monks. The first recorded clock was built by the future Pope Sylvester II around 996. Much more sophisticated clocks and church towers were built by monks later. Peter Lightfoot, a 14th century Glastonbury monk, built one of the earliest surviving clocks, which is still in use at the Science Museum in London. Getting a birthday clock from a family member or friend is cool : unusual gifts for birthday, best anniversary gift ideas and unique anniversary gift ideas that will always be in time for a family gathering or with friends