Clock with anniversary...
"Charlemagne's "Clock In 806, Charlemagne was presented with a prestigious horologium by an ambassador of the Abbasid Caliph of Baghdad, Haroun ar-Rachid; this clock, whose automata are often described in detail, is sometimes considered a mechanical clock. Located in the northern part of the Champ-de-Mars (Rome), halfway between the Mausoleum of Augustus and the Pantheon of Agrippa, this monument, inaugurated in 10 BC, was unique in its size in antiquity. It was a gigantic sundial, occupying a large square of 150 by 70 metres, paved with marble and bearing astronomical graduations and bronze inscriptions, some of which have been found. Eginhard, Charlemagne's chronicler, described it in the 800s as follows: "A machine which, driven by the motive power of water, marks the hours by an appropriate number of small bronze balls which fall on a brass gong; at the end of each hour, a rider comes out of one of the twelve windows, which is open at first and then closes behind him." Later, Pacificus of Verona, who died in 844, is also credited with the invention of a clock, considered the first mechanical clock. His horologium nocturnum was in fact only an observation tube that bore some resemblance to the nocturlabe depicted in one of the astronomical manuscripts in the library of the abbey of Mont-Saint-Michel; this affinity is still found in 20th century encyclopaedic sources. Having a clock as a birthday gift with a decoration dedicated to a specific birthday, 20 years, 60 years or more, is fun: unusual gifts for birthday,best anniversary gift ideas and unique anniversary gift ideas for an event that is celebrated every year and that will remain unique.
