This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Silverplated Mariner's Astrolabe. en This is silverplated mariner's astrolabe made by Nicolao Ruffo and dated The astrolabe was found by Gigi Fernandes Corcia an experienced diver and full time member of the Arqueonautus dive team during the survey and excavation of wreck site at Passa Pau on the island of Santiago in November of