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Rare moveable volvelle device in full original color, from volume 3 of Giovanni Paolo Gallucci's Theatrum Mundi, et Temporis, published in Venice in 1588.
An interesting hand-colored scale depicting the months, with another circular scale on top with varies numbers and zodiac symbols, topped with yet another circular scale held in place with a small brass rivet at center.
Galluchi's work presents the forty-eight maps of the Ptolemaic constellations, depicted as a beautiful collection of mythologic figures. The star positions are taken from the Copernicus' catalog. Gallucci's work is generally considered the first modern celestial atlas because in its maps, Gallucci used a coordinate system and a trapezoidal system of projection that allow the accurate determination of the star positions.
![[ Florida Native Americans Declaring War ] Bellum denunciandi ratio. XXXIII.](https://storage.googleapis.com/raremaps/img/small/98006.jpg)