Davis Mark 3 Marine Sextant [011] Marine Navigation & Instruments | Autopilots Rated for Underwater Use

Rated for Underwater Use

1/2" NPT ports for easy connection

Powerful and sturdy

Small bilge debris present no problem to these bronze bodied

The Reverse "Y" Adapter has two male plugs with special power isolation circuitry for added safety

Davis Mark 3 Marine Sextant [011] Marine Navigation & Instruments | Autopilots Rated for Underwater UseMark 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)