Brass Nautical Sextant Engraved Directional Maritime Navigational Sextant London Maritime Nautical Sextant Telescopes Marine Astrolabe Ship's Instruments with Leather Box Kelvin Hughes London 1917

Description

• Size: 5.5" x 5.5" x 3"
• Material: Solid brass, leather, glass
• Finish: Polished brass

Looking for a sophisticated gift? This beautifully crafted nautical room decor, brass sextant could be it! This fine astronomy instrument sparks an interest in anyone who sees it. The brass sextant is sure an attention grabber and conversation starter and will make a great addition to anyone's nautical home interior or office. Sextant is an instrument for determining the angle between the horizon and a celestial body such as the Sun, the Moon, or a star, used in celestial navigation to determine latitude and longitude. The device consists of an arc of a circle marked off in degrees, and a movable radial arm pivoted at the center of the circle. A telescope mounted rigidly to the framework, is lined up with the horizon. The radial arm, on which a mirror is mounted, is moved until the star is reflected into a half-silvered mirror in line with the telescope and appears, through the telescope, to coincide with the horizon. The angular distance of the star above the horizon is then read from the graduated arc of the sextant. From this angle and the exact time of day as registered by a chronometer, the latitude can be determined (within a few hundred meters) by means of published tables. Comes in a leather box. Size: 5.5" x 5.5" x 3" Material: Solid brass, leather, glass Finish: Polished brass

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