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.
Pascaerte Van't Westelyckste der Middelandsche Zee. . .
An eye-catching chart of the western part of the Mediterranean Sea.Pieter Goos (ca. 1616-1675) was one of the most important cartographer, engraver, publisher and print seller of Amsterdam. His widow continued business at her husband's death. She re-issued the Nieuwe Groote Zee-Spiegel in 1676.In very decorative original colors. The compass rose and cartouche heightened with gold.The map is in a strictly contemporary coloring and of the highest level.
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Maker : GOOS, P.
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RECTO: A panoramic view of the city of Groningen dated 1573.VERSO: a woodcut of a cow, a bull and their calf.Taken from Sebastian Munster's encyclopedic work, the "Cosmographia Universalis". The Cosmographia by Sebastian Münster had numerous editions in different languages including Latin, French (translated by François de Belleforest), Italian, English, and even Czech. The last German edition was published in 1628, long after his death. The Cosmographia was one of the most successful and popu...
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Soil map - Virginia Norfolk Sheet.
Soil map printed by Julius Bien & Co. in New York for the Department of Agriculture. The map gives great detail of the area centered on Norfolk, Potsmouth, Chesapeake, Virginia Beach in the year 1903. Soils are surveyed by J.E.Lapham in the same year. To the left and right, color keys to the different soil types.Upper left: U.S.Department of Agriculture, Bureau of soils, Milton Whitney, Chief.Julies Bien (later Bien & Co) was born and educated in Germany, and moved to America in 1849. He started...
$50
Maker : U.S. DEPT. OF ARGICULTURE
Place : New York 1903
Date : 1903
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Item Location
Terms and conditions - Item Location
- 75013, Alsace, France
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- No pick-ups
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