This article reveals the recovery of a compass balance from a Manila galleon that was wrecked in the 16th century off the coast of Baja California, Mexico, and discusses the possibility that it was made in Spain. Based on an analysis of navigation treaties, written in the context of the training of pilots by the Casa de Contratación (House of Trade), it is revealed in detail how nautical compasses were manufactured in Spain during that period. As a result of the review of the nautical literature of that century, it is concluded that the compass was the most important nautical instrument on board and that its simple design allowed any malfunction to be resolved during the journey. In addition, the authors affirm that the design of this compass was very similar to those suggested in the European navigation traditions of the 16th century, and thus, it seems quite possible that the compass rocker found in Baja California was made in the Hispanic world.

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