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Perpetual Calendar
Price
61.50€
Confront the sophisticated use of this amazing Astronomical Ring, which will tell you the time (equinoctial or true time) as it has done for centuries, while reminding you of the exciting history of science that has seen the birth of complex inventions, which will lead to contemporary technological innovations.
Read moreA smaller replica of a large sundial (or astronomical ring). The original dates from the 17th and 18th centuries.