Davis Mark 3 Marine Sextant [011] Communication | Mobile Broadband this gets reversed and a

this gets reversed and a gender changer can be used to get back to the desired connector type

Supplied 2400 mAh (typical) high capacity Li-ion battery

Awareness of the rudder angle is an important safety factor

EV-2 Sensor Core

Davis Mark 3 Marine Sextant [011] Communication | Mobile Broadband this gets reversed and aMark 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)