Ming-marine-compass.jpg
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Ming marine compass, Layout of marine compass in Ming dynasty, Ming Dynasty 24-pointed compass, A 24-point compass chart employed by Zheng He during his explorations, Diagram of a Ming dynasty mariner's compass
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Ming marine compass, Nautical compasses
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明海コンパス、明海コンパスの羅針盤、明海の羅針盤24点羅針盤、和が探検中に使用した24点コンパスチャート、明海の海士の羅針盤の図
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明海コンパス
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magnetic compass compass circinus