This is a vintage Sestrel lifeboat compass made of brass. The compass is liquid filled and is functional.  This vintage Sestrel lifeboat compass measures about 8 inches tall. The base is about 8 3/4 inches in diameter.   The vintage sestrel lifeboat compass weighs just under 6 1/2 pounds.  The compass card is marked with the makers’ name “Sestrel”.  The compass itself gimbals freely inside the housing.