Davis Mark 3 Marine Sextant [011] Brand_Cannon Add the optional hailing horn

Add the optional hailing horn (M95435) and use your Ray73 tocommunicate with crewmembers on deck

Two sizes (6mm - 8mm/1/4" - 5/16" and 10mm - 12mm/3/8" - 7/16") are available to suit vessels up to 20 metres (65')

To mount the rail base

6 foot cable

Volume - 47

Davis Mark 3 Marine Sextant [011] Brand_Cannon Add the optional hailing hornMark 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)