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.
Nieuwe gelyk Graadige Paskaart van de Kust van Guiana in West-Indien.
Detailed chart of Guiana in South America. Two scales are given in both maps: Dutch, French and English nautical miles.The inset chart provide detailed view of the Camopi and Maroni or Marowijne Rivers that forms the border between French Guiana and Suriname. The charts are prepared by Johannes Loots and H.Mooy.
$650
Maker : VAN KEULEN, G.
Place : Amsterdam
Date : 1684 - 1704
Kaart van de Reede van Batavia met de verschillende vaarwaters naar dezelve trigometrisch opgenomen op last van deb schout bijnacht E.Lucas.
Very large and rare so-called blue-black chart centered on Jakarta's harbor.The chart is prepared by B.G.Escher, I.A.C. Eschauzier, B.H.Staring and E.H.Boom during an expedition in 1841 by the ships Krokodil and Hekla. The chart is engraved by J.C.Zurcher and updated for and published in 1847 by Jacob Swart. When Gerard Hulst van Keulen died in 1801, his widow ran the firm until her death in 1810, at which time Johannes Hulst van Keulen became the last van Keulen to run the firm.In 1823, Jacob S...
$1.800
Maker : HULST VAN KEULEN, Wed. G.
Place : Amsterdam
Date : (1841) 1847
![[Dutch attack the fortress of Praia.]](/assets/images/image-loading.svg)
[Dutch attack the fortress of Praia.]
Scarce print with German text sheet showing the Dutch attack on Praia.On 27th June 1589, Simon de Cordes left Holland with five ships, bound for the Magellan Straits. On reaching Santiago - one of the Cape Verde Islands, they decided to loot the fortress at Praia. This stood on top of a high rock whose only approach was by a narrow stairway with 175 steps. At the time the fortress was occupied by the Portuguese, under a Spanish commander. On landing, however, the Dutch were entertained by some o...
$80
Maker : GOTTFRIED, J.L. / DE BRY.
Place : Frankfurt, M.Merian, 1633
Date : 1633
Descriptio Arcis Britannicae.
An original early 17th century copper engraved miniature antique map of the Roman remains in the sand dunes near Katwijk aan Zee in south Holland by Petrus Bertius. In Roman times, Katwijk was a place of strategic importance. It was located at the Roman Empire's northern border, at the mouth of the Rhine river, which in Roman times was larger in this area than it is today. There was a good deal of traffic along the Rhine. Katwijk was also a jumping-off point for the voyage to Britain. The map i...
$100
Maker : LANGENES, B. / BERTIUS, P.
Place : Amsterdam
Date : 1606
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Item Location
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- 75013, Ile-de-France, France
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