Mark 25 Deluxe Plastic Davis Sextant Full Field Beam Converger

Mark 25 Deluxe Plastic Davis Sextant Full Field Beam Converger 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. The top of the line Davis plastic sextant, the Mark 25 features our Beam Converger™ mirror, sometimes referred to as a “full horizon mirror”. A special coating is applied to high quality optical glass to allow the user to see through this mirror, yet still pick up images as faint as low-light stars. The Mark 25 is illuminated by a long-life LED and made of an upgraded plastic that is very stable. It also comes in a durable hard case with an instruction booklet. Size: 10″ x 10″ x 5″