Hydrochronometer
Encyclopedia
A Hydrochronometer is a kind of a water clock
Water clock
A water clock or clepsydra is any timepiece in which time is measured by the regulated flow of liquid into or out from a vessel where the amount is then measured.Water clocks, along with sundials, are likely to be the oldest time-measuring instruments, with the only exceptions...

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In 1867, Fr. Giovan Battista Embriaco created a Hydrochronometer, and sent it to the Paris Universal Expo of 1867, where it received many prizes. The Hydrochronometer has the shape of a wooden pinnacle made of cast iron fused as tree trunks, while its four dials are visible from every direction.

In 1873, the Water clock was in Rome and was placed in Villa Borghese gardens
Villa Borghese gardens
Villa Borghese is a large landscape garden in the naturalistic English manner in Rome, containing a number of buildings, museums and attractions. It is the second largest public park in Rome after that of the Villa Doria Pamphili...

 into a fountain realized by the architect Gioacchino Ersoch. It's still placed there and works 24/7
24/7
24/7 is an abbreviation which stands for "24 hours a day, 7 days a week", usually referring to a business or service available at all times without interruption...

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In June 2007, after two years of restoration at ELIS School, it was restarted by the Town Major of Rome.
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