Telescopic Marine Alidade
WK-13-7500
Using adapter rings to mount the alidade on a compass or gyrocompass indicator, the alidade is primarily intended to be used with the 6″ and 7½″ magnetic compass and the 6″ and 7½″ gyrocompass indicator. The nitrogen purged main housing consists of a reticle-equipped, terrestrial telescope for viewing distant objects and an auxiliary optical system for viewing the compass card and the bubble in the level vial. With adapter rings and case.
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