Mark 15 Plastic Davis Sextant – Split Horizon Mirror

Mark 15 Plastic Davis Sextant – Split Horizon Mirror A 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. This model has many great features including seven large sunshades, a 3 mm x 27 mm star scope, and easy-to-read micrometer drum vernier scale that reads to 2/10 of a minute. It has a 7-inch frame radius that is graduated from 120 to -5 degrees. This sextant navigation tool also comes with a traditional half-silvered mirror and a durable hard case. It also comes with an instruction manual that is easy to follow The Mark 15 is a traditional sextant that provides accurate readings of many object pairs. It is lightweight, and the swingarm is easy to move with a smooth action. A sextant is a simple instrument that is easy to use once you try it a few times. Size: 10″ x 10″ x 5″