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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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.
Brabantia Ducatus.
A very decorative map by Willem Blaeu with west is at the top. On the lower left a magnificent cartouche with a sitting female figure carrying a globe and compasses and the coat of arms of Brabant. The map encloses the area between the rivers Rhine, Meuse and Scheldt, with Namur (Namen) as the most southern town.
$400
Maker : BLAEU, W.
Place : Amsterdam, 1645
Date : 1645
Soil map - Georgia, Fort Valley sheet.
Early color lithographed soil map by Julius Bien & Co. in New York for Department of Agriculture. Legends at side give detail on soil type, etc. They also include interesting details of the cities, roads, railroads, rivers, canals, etc. Scale of 1" = 1 mile. The map is giving great detail of the area in the year 1903. Soils are surveyed by Wm. G. Smith and Wm. T. Carter Jr. in the same year. To the left and right color keys to the different types of soil.Upper left: U.S.Department of Agricult...
$50
Maker : U.S. DEPT. OF ARGICULTURE
Place : New York, 1903
Date : 1903
![[Ternate].](/uploads/cache/37954-500x500.jpg)
[Ternate].
Text engraving showing a bay on the Island of Ternate, an island in the Maluku Islands (Moluccas) of eastern Indonesia. Above the map a lettered key (A-E). Text engraving from "Premier livre de l'histoire de la navigation aux Indes Orientales, par les hollandois, et des choses a eux advenues . . . ", being the classic account of the first Dutch voyage to the East Indies under the command of Cornelis de Houtman. the expedition left in 1595, after Holland had achieved independence from Spain and c...
$150
Maker : LODEWYCKSZ, Willem
Place : Amsterdam, Cornille Nicolas
Date : 1609
L'Amerique divisée en ses principaux Etats..
Uncommon map published by Lattré. This map is most notable for its depiction of "Mer de L'Ouest" or "Sea of the West". A great sea, easily the size of the Mediterranean, to flow from the then-known Strait of Juan de Fuca. Showing an opening to the ocean from this great sea at roughly in North California or Oregon and Quivira somewhere in Idaho. Fattening Alaska and appropriately leaving blank the unknown parts of Northern America. Listing Indian nations, towns such as Santa Fe.
$900
Maker : JANVIER,Sr.
Place : Paris
Date : 1760
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Item Location
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- 75013, Ile-de-France, France
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