Davis Deluxe Mark 25 Master Sextant [025]

The Mark 25 Sextant #025 is the top - notch Davis plastic sextant. It features the Beam Converger™ mirror, also known as a 'full horizon mirror'. A special coating on high - quality optical glass lets you see through the mirror and spot faint images like low - light stars. Illuminated by a long - life LED, it's made of upgraded, stable plastic. Comes with an instruction booklet and an Owner's Manual (pdf).

Using the Mark 25 Sextant is easy. First, take it out of the box and read the instruction booklet that comes with it. Hold the sextant steadily and use the Beam Converger™ mirror to align with the object you want to measure, like a star or the horizon. The long - life LED will help you see clearly even in low - light conditions. When not in use, keep it in a dry and safe place. Avoid dropping it or exposing it to extreme temperatures as the upgraded plastic, though stable, can be damaged. Periodically check the mirror for any scratches or dirt and clean it gently with a soft cloth. Refer to the Owner's Manual (pdf) for more detailed information if you have any questions.