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How to use a sextant
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Calibrating and Using A Sextant
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NASA | SEXTANT: Navigating by Cosmic Beacon
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The Apollo Navigation Sextant: Guiding Astronauts with Stars & Math
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Celestial Navigation: Sextant Basics; ASA 107 Skills
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The Sextant in Practice: Sun-Run-Sun explained
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Sextant -Principle, Errors , Care And Maintenance .
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Choosing a sextant with Tom Cunliffe
