<B>Mark 3 Marine Sextant</B><br><br>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.<br>Comes with instruction booklet.<br> <!--- cis2:m2lumJ1t --->