WWII US Army Air Corps A10 Bubble Sextant

WWII US Army Air Corps A10 Bubble Sextant

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WWII US Army Air Corps A10 Bubble Sextant. A Sextant is an instrument used to measure the angle between any two visible objects. Its primary use is to determine the angle between a celestial object and the horizon which is known as the altitude. Making this measurement is known as sighting the object, shooting the object, or taking a sight. The angle, and the time when it was measured, can be used to calculate a position line on a nautical or aeronautical chart. A common use of the sextant is to sight the sun at noon to find one's latitude. Since the sextant can be used to measure the angle between any two objects, it can be held horizontally to measure the angle between any two landmarks which will allow for calculation of a position on a chart. A sextant can also be used to measure the Lunar distance between the moon and another celestial object (e.g., star, planet) in order to determine Greenwich time. They were issued during World War two to personnel from the Army Air Force (AAF).

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Product Code: 1SEY4

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