ID: 114
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Very fine brass astronomical equinoctial ring with two brass circles.
BuyNow for $8.000
- Maker :
- JEAN-BAPTISTE NICOLAS DELURE À PARIS
- Place :
- Paris
- Date :
- ca. 1690
- Color :
- Uncoloured
- Height mm.:
- 160
- Width mm.:
- 160
- Condition :
- Diameter of the equinoctial ring is 10cm.
- Bibliography :
- A Butterfield ring dial of similar design but smaller, is illustrated in Sundial at Greenwich, Hester Highton, OUP 2001, page 200, catalogue no. 186.
- Seller's ref. :
- 48701
This item is offered by Paulus_Swaen_Old_Maps
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$8.000
Description
Very fine brass astronomical equinoctial ring with two brass circles with engraved foliage decoration, signed "Jean-Baptiste-Nicolas Delure A Paris", on the hanger ring.
The meridian ring is engraved with a latitude scale 90-0-90 degrees, reverse with a scale for determining solar altitude and zennith distance, an equinoctial ring with obverse engraved with hour scale in Roman numerals, the central bridge with pin-hole sliding over calendar and zodiac scales, 100 mm diam.
Jean-Baptiste-Nicolas Delure (1695-1766) was a renowned French instrument, globe maker and horologist was given the title "Ingénieur du Roi, juré en 1721-1723" (under the license of the king" (Louis the XIV) in 1721-1723). He was a Master and Juror of the Corporation des Fondeurs and appointed Ingénieur du Roi to Louis XIV. He had two workshops, both on Il de la Cite, Paris.
Jean-Baptiste-Nicolas Delure (1695-1766) was a renowned French instrument, globe maker and horologist was given the title "Ingénieur du Roi, juré en 1721-1723" (under the license of the king" (Louis the XIV) in 1721-1723). He was a Master and Juror of the Corporation des Fondeurs and appointed Ingénieur du Roi to Louis XIV. He had two workshops, both on Il de la Cite, Paris.
He was father-in-law to the fifth son of the eminent Parisian instrument maker Nicolas Bion.
Jean-Baptiste Nicolas Bion carried on both their businesses until around 1770.
Jean-Baptiste Nicolas Bion carried on both their businesses until around 1770.
The meridian ring is engraved with a latitude scale 90-0-90 degrees, the reverse with a scale for determining solar altitude and zenith distance, the quadrennials ring with obverse engraved with an hour scale in Roman numerals, the central bridge with pin-hole sliding over the calendar and zodiac scales, 100 mm diam.
This is a relatively large example of the classic pendant ring dial, useable anywhere on earth without a compass. Only the date and one's latitude are needed to determine the apparent solar time and even the North. the latitude can be determined using the quadrennial degree scale at the backside to measure the solar meridian altitude.
As the other stars appear to rotate, their position at any moment indicates the time. Sometimes called “horologium nocturnum” or “Nocturlabe” are related to the astrolabe and the sundials.
The mention of a dedicated instrument for its measurement was not found before the Middle Ages. The earlier image presenting the use of a nocturnal is in a manuscript dating from the 12th century.
Raymond Lull repeatedly described the use os a “Sphera horarum noctis”. With Martin Cortés de Albacar´s book “Arte de Navegar” published in 1551 the name and the instrument gained a larger popularity.
Timekeeping was very important to navigators at sea. Precise time was needed to use tide tables to enter harbors safely and also to regulate work shifts aboard.. Thus, the navigators could tell the time at night if the weather was clear.
The problem was that when the sky was obscured in foul weather, they had no way of knowing the exact time except by running the sand-glasses. By the middle of the 18th century, more accurate clocks became available, known as chronometers and the nocturnals fell out of use. Nocturnals are really simple analog computers. The nocturnal is simpler to use than other instruments requiring mathematical tables and trigonometry.
Inverted nautical Compass, called "mouchard" (~ "spy-glass")
Inverted maritime compass called "mouchard" (spy) in wood and brass, signed "A Van Vastenhoud In Amsterdam". This type of compass was found in the captain's cabin and hanging above the captain's bed. The captain was so able to see the direction when he was in his cabin. This example is mounted in a wooden box to keep it safe. The compass itself is mounted on brass gimbals to keep it steady on a moving ship. It has a single iron needle with a brass cap that rests on a spike projecting from the bo...
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Maker : VAN VASTENHOUD, A.
Place : Amsterdam
Date : ca. 1780
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First edition Humorous map of Death Valley. "Drawn In Broken English by Jolly Lindgren," this comic pictorial map is full of puns and comic vignettes related to Death Valley. The Lindgren Brothers issued a number of other silly whimsical maps of national parks and other parts of the West.
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Date : 1948
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Scarce print with a German text sheet. Many Black slaves, weary of ill treatment, managed to escape Spanish captivity and freely wandered the island, breaking into prisons and recruiting other slaves. Soon they outnumbered the Spanish and sought revenge by killing some of them. After a meeting at the governor’s palace in Santo Domingo, many Spanish soldiers were sent out to quell the rebellion by catching the Blacks by night and hanging them from trees. The Blacks learnt from this to keep a lo...
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Maker : GOTTFRIED, J.L. / DE BRY.
Place : Frankfurt, M.Merian, 1633
Date : 1633
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A bird's-eye view of the town. With extensive shipping in the foreground. From "Topographia Germaniae Inferioris". Matthäus Merian, the leading German illustrator of the 17th century, was born in Basel in 1593. He learned the art of copperplate engraving in Zurich and subsequently worked and studied in Strasbourg, Nancy, Paris, and the Low Countries. In 1618 he went to Frankfurt, wherein 1618 he marries the eldest daughter of J.T. de Bry, publisher and engraver. After de Bry died in 1623, he ...
$1.750
Maker : MERIAN, C.
Place : Frankfurt
Date : 1659
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- Zwijndrecht, , Netherlands
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