Davis Mark 3 Marine Sextant [011] Marine Navigation & Instruments | Autopilots Built-in backflow preventer

Built-in backflow preventer

most capable

1/2" NPT ports for easy connection

Small bilge debris present no problem to these bronze bodied

The two lashing loops and included Velcro strap make mounting the Firefly® PRO SOLAS to your life jacket

Davis Mark 3 Marine Sextant [011] Marine Navigation & Instruments | Autopilots Built-in backflow preventerMark 3 Marine Sextant Sometimes referred to as a "lifeboat" sextant, the Mark 3 is an inexpensive training sextant. Yet this model has taken sailors around the world, too! It is full sized and has sunshades, but no optical magnification to help you find dim celestial bodies. Comes with instruction booklet. Owner's Manual (pdf)