Artificial 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 with two sun shades, a lid and full directions. Compact 6" x 4" x 1-1/2" (15 x 10 x 4 cm).

Comes with 2 Sun Shades, Lid and Full Directions. Make exact Sextant Shot on Foggy Mornings. Find Exact Position when Inland. Use for Backyard Practice. Answers the Need of every Sextant User who cannot depend on a Natural Sea Horizon.

Unit Count: 1.0 Count. Item Package Quantity: 1. Item Weight: 0.9 Pounds. Number of Items: 1. Brand: Davis Instruments. Batteries required: No. Is Discontinued By Manufacturer: No. Best Sellers Rank: #93,564 in Sports & Outdoors. Customer Reviews: 4.6 out of 5 stars 71 ratings 4.6 out of 5 stars. Item model number: 144. : B002MJGSVM. Manufacturer: Davis Instruments. Item Weight: 14.4 ounces. Product Dimensions: 5 x 8 x 2 inches.