Universal Equinoctial Ring Dial

This outstanding brass universal equinoctial ring dial the meridian ring divided 90 0 70.

Universal equinoctial ring dial.

Universal equinoctial ring dial franklin mint with mahogany base. A ring dial or two ring universal equinoctial ring dial to give it its full name was a cutting edge scientific instrument in its time which is about 500 years ago. The inner rim of the equinoctial ring has an hour scale while the. I found a universal equinoctial sun ring dial for sale at grand illusions this particular version is about 3in across.

A universal equinoctial ring dial sometimes called a ring dial for brevity although the term is ambiguous is a portable version of an armillary sundial or was inspired by the mariner s astrolabe. Universal equinoctial sun ring dial then i found another interesting pocket sundial. Seller assumes all responsibility for this listing. Contact the seller opens in a new window or tab and request a shipping method to your location.

Essentially it is a type of sundial that allows you to tell the time wherever you are so long as the sun is shining originally developed in the early 17th century by the. Three ring universal equinoctial ring dial for all latitudes. Its clearly one of the few still being made and appears for sale at a number of different places. The universal equinoctial ring dial is 2 1 2 in diameter.

The ring dial is divided into sectors south 90 degrees to north 90 degrees and divided into months and further calibrated into 24 hours with an adjustable calendar calibrated into 12 months.