Very fine brass astronomical equinoctial ring with two brass circles.
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 De...
$8.000
Maker : JEAN-BAPTISTE NICOLAS DELURE À PARIS
Place : Paris
Date : ca. 1690
A ship's hour glass.
Maritime hourglass with blown glass bulbs, orange sand, junction ring covered with cord, the circular ebony frame with six turned baluster columns. The invention of the hourglass is attributed to an 8th-century monk in Chartres, France, with the marine sandglass appearing as early as the 14th century. In earlier examples, the bulbs were connected with a material such as putty or hardened wax, bound in leather, linen or string. From about 1720, the two bulbs were welded together over a brass bead...
$2.000
Maker : ANONYMOUS
Place : Germany
Date : ca. 1750
A ship's hour glass.
Maritime hourglass with blown glass bulbs, orange sand, junction ring covered with cord, the circular ebony frame with six turned baluster columns.The invention of the hourglass is attributed to an 8th-century monk in Chartres, France, with the marine sandglass appearing as early as the 14th century. In earlier examples, the bulbs were connected with a material such as putty or hardened wax, bound in leather, linen or string. From about 1720, the two bulbs were welded together over a brass bead ...
$1.750
Maker : ANONYMOUS
Place : The Netherlands or Germany
Date : ca. 1750
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...
$7.500
Maker : VAN VASTENHOUD, A.
Place : Amsterdam
Date : ca. 1780
Marine parallel rulers in brass.
Very fine marine parallel rulers in brass. The parallel ruler is the oldest and most traditional way to measure and trace routes and bearings. The principle is simple: the ruler is placed on the road to be measured and then, like a pantograph, the other part of the ruler is placed on one of the declination roses on the map to determine the angle. They are, essentially, two straight-edges hinged so that they maintain the same angle. By alternating the moving edge, and securely holding down the no...
$1.500
Maker : ANONYMOUS
Place : Paris
Date : ca. 1880
Compass.
A sloop compass in the original wooden box with lit. The compass with floating rose (Cardan system). Slung in gimbals, the east point is decorated and graduated in half points and decorated N & E points.The cardan suspension system, also called a gimbal, is a pivotal support that allows the rotation of an object about a single axis. If simultaneously assembled three rings, one on another by orthogonal rotation axes, an object placed inside the third ring always remains horizontal, regardless of...
$650
Maker : ANONYMOUS
Place : Unknown
Date : c. 1890-1900