18th Century Augsburg Equinoctial Pocket Sundial in Original Case
Lorenzo Grassl of Augsburg, antique equinoctial pocket sundial in original case with original single page calibration instructions printed in German, French and Italian, 18th century, 2.17 in. wide
You must be a subscriber, and be logged in to view price and dealer details.
Register Now to view actual auction price for this item.
- Equinoctial Dial on a Sundial - An equinoctial dial is a type of sundial that uses the equator as a reference plane and the gnomon, or sundial arm, is positioned perpendicular to the equator, which allows the sundial to be used in any location with a clear view of the sun and provides an accurate reading of local solar time.
Equinoctial dials were first developed in ancient Greece and were later refined by Arab astronomers. The dials became popular in Europe during the Renaissance, when they were used as both scientific instruments and works of art. Equinoctial dials were particularly popular in Italy, where they were often made of bronze or stone and were decorated with intricate engravings, sculptures, and inscriptions. The sundial as an instrument was superseded by the chronometer.
This item has been included into following indexes:
- sundials
