Davis Artificial Horizon [144] 31" PVC Drain Cap f/Heavy Rod

PVC Drain Cap f/Heavy Rod Holders 1/4" NPT

It will not crack or distort with temperature extremes

Shipping Weight: 5 oz

6V): 40 L/M - 630 GPH

Davis Artificial Horizon [144] 31" PVC Drain Cap f/Heavy RodArtificial 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