Cross-staff, a navigational instrument for measuring the altitude of a heavenly body to find a ships latitude. Here the observer is taking he height of the sun. 16th century woodcut.
Cross-staff, a navigational instrument for measuring the altitude of a heavenly body to find a ships latitude. Here the observer is taking he height of the sun. 16th century woodcut.
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Photo credit: © World History Archive / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: 16th, altitude, archival, archive, astronomy, body, century, cross-staff, find, heavenly, height, historical, history, instrument, latitude., measurement, measuring, navigation, navigational, observation, observer, science, ships, sun., woodcut.
