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or smartphone with an internet connection
(3 m) cable
plus additional UV and solar radiation sensors
The sextant uses two mirrors to measure the distance between objects
Mark 15 Sextant Navigation Tool - SKU 26 stars or smartphone with an internetA sextant is an excellent tool to have on board any size craft as a backup in case there is a failure of the navigational systems. Used to measure the angular distance between two visible objects, the most common sextant navigation points are an astronomical object and the horizon. Sextants have many uses, ranging from measuring the distance of a landmark to determining Greenwich Mean Time. The Davis Instruments Mark 15 sextant navigation tool
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