Davis Instruments Artificial Horizon, Part 144 for Sextant Navigation

Substitute for a natural sea horizon, the Davis Artificial Horizon enables accurate sextant readings when the horizon isn’t visible—perfect for backyard practice, inland navigation, or foggy mornings. To use, fill with water, align the reflected sun with your sextant, and read the angle. Half of that measurement gives the sun’s altitude above the true horizon.

Windproof and corrosion-resistant, the reflecting surface is fully enclosed to resist wind and moisture, ensuring stable readings in harsh environments. The compact design keeps it portable and easy to deploy on a boat, in a backyard setup, or during field expeditions.

• Dimensions: 6" x 4" x 1-1/2" (15 x 10 x 4 cm)
• Construction: durable, corrosion-resistant materials with a fully enclosed reflecting surface
• Includes: two sun shades, a protective lid, and complete usage directions
• Operation: fill with water, read the sun’s angle, and halve to obtain the sun’s altitude above the true horizon

Designed for maritime enthusiasts, navigators, and outdoor adventurers who rely on sextants, this artificial horizon provides reliable, repeatable readings when a natural horizon is unavailable, supporting practice, training, and real-world navigation alike.

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).

The Davis Instruments Artificial Horizon is an essential tool for maritime enthusiasts, navigators, and outdoor adventurers who rely on sextants for precise navigation. Designed to substitute for a natural sea horizon, this device is ideal for backyard practice, inland navigation, and foggy mornings when visibility is limited. Its compact size makes it easy to carry and set up, whether on a boat, in a backyard, or during field expeditions. Made from durable, corrosion-resistant materials, the artificial horizon features a fully enclosed reflecting surface that withstands wind and moisture, ensuring consistent performance in challenging conditions. Included with the device are two sun shades, a protective lid, and comprehensive instructions to facilitate accurate use and readings. To operate, fill the device with water and align it with your sextant to determine the sun's angle relative to the true horizon. By halving this measurement, users obtain the sun's altitude, enabling precise navigation even when natural horizons are obscured. Its portability and reliability make it an indispensable tool for navigation training and real-world applications alike. Whether you're practicing at home or navigating through foggy conditions at sea, the Davis Artificial Horizon ensures accurate and dependable readings, supporting safe and confident navigation at all times.

Features:

• Substitutes for natural sea horizon for accurate sextant readings

• Compact and portable design measuring approximately 6 inches by 4 inches by 1.5 inches

• Windproof and corrosion-resistant construction for durability in harsh environments

• Includes two sun shades, a protective lid, and full usage instructions

• Easy to fill with water and use for determining sun angles above the true horizon