The equinoctial ring sundial originates from the "Golden Age" of sundials between the 16th and 18th century. It was also called the "Queen of Sundials", because it is the only sundial which can find due south without a compass and can be used at any latitude all over the world.
The CIELO [ital. heaven] is the highest level of development in the equinoctial ring sundial (registered for patent), is simpler to use and more accurate. And it is a model of the firmament, which helps us to understand the origins of time measurement from an authentically cosmic point of view.
Shiny parts are coated with gold or palladium, meridian disc and date ring are made of stainless steel, all scales and the time ring are made of anodized aluminium with scratch-resistant printing. With detailed English manual.
Please find further information in our sundial shop: CIELO Ring Sundial