Davis Artificial Horizon [144] Cartography | C-Map Max this Phase IIIT antenna enables

this Phase IIIT antenna enables reliable communication over marine VHF frequencies

Dimensions Cylinder Inches: 3-1/2 x 4

enabling NMEA 2000 display devices to monitor the connected engine(s) on a vessel

Red Non-Dimming & White Dimming with White Housing

This stopper fits a 2-1/16 in

Davis Artificial Horizon [144] Cartography | C-Map Max this Phase IIIT antenna enablesArtificial Horizon Answers the need of every sextant user who cannot depend on a natural sea horizon. Use for backyard practice, finding exact positon when inland, and making exact sextant shot on foggy mornings. To use, fill with water and read the angle of the reflected sun with your sextant. Half your sextant reading is the sun's angle above the true horizon. Windproof and corrosion resistant, the reflecting surface is completely enclosed. Comes