Made of solid brass and a delight to handle and use, this is a truly scientific instrument that has parentage dating way back to the early measuring devices of the Greek and Roman Empires. 61 mm diameter true working model! Accurate to within 5 minutes any where around the globe.

Although known as the astronomical ring, it is principally employed as an ecuatorial solar universal quadrant. Its use was widespread during 18th century.

The Voglers contributed to the popularization of this instrument in the 18th century. They have a characteristic style of equinoctial sundial that became known as "Augsburg clocks" for the city in which they were made. The lower part of the original instrument, contained the compass, with its casing inscribed with the latitudes of several important cities between 32º and 60º north.

The name is derived from the best known version of this solar clock, in which the path of the pearl in both tropics traces two lines that resemble the hood of Capuchin monks.The quadrant goes back to the 15th century, although the date is not precise. This model is a sea-going, local-hour quadrant of a type called a clinometer. It is a reproduction and has been calculated for a latitudes of 51.5º N

This model is a reproduction of a mobile cubic quadrant that dates back to 1736, and is thought to be the invention of David Beringer of Hapsburg (Germany). It is made up of an articulated arm, which allows us to incline the cube in a North-South direction, and a plumb line on the eastern side that moves along a graduated scale and can be used to adapt the instrument to the latitude of the mesaure.

From immemorial times, humanity has known that the changing length of an object?s shade indicates the time of the day and this shade is shorter towards midday and extended towards the dusk. Without a doubt the first rudimentary sun dial simply consisted of a stake nailed in the ground. The sun dial we design is denominated "faltriquera", dated from XVI century, whose original ones are showed in museums as the one of Nuremberg and the Museum Correr in Venice.

This nautical compass was used in the 16th century. In this discovering era was of critical importance in navigation and developing cartography. In this model we have both a compass and a sundial, so we can tell the time straightaway.

When the sun dial became popular and still there were no mechanical clocks, a serie of portable dials arose and represented the culmination in the art of gnomonic. One of these dials is the Shepherd Dial, as they were the first in using them in its long days of pasturing. It belongs to the Sun Heigh Dial, since sun height determine time. The one reproduced by us, it is a retort of 1548 which is displayed in the Kunsthistoriches Museum of Vienna.....

The equatorial dial shows the Earth situation. Basically, it has a semicircle where the equator is stated and a central stick as the representation of the terrestrial axis. Inclined properly to resist the Earth inclination, the shade of the stick shows the time in the inner part of the circle. This one is a reproduction of an equatorial dial made in Italy in the Renaissance (XVI century).