6" Ritchie B-463 Globemaster compass for sale. Kelvin correctors for steel boats. Vibration compensated for motor yachts or sail. 20"oa width, 9" base diameter, 24 lbs, 12 volt night light. Paint is fair, dome clean, no bubbles, dial is clean. $550 cash, local pickup or shipping and insurance at cost plus proper crating and expenses.