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Images: 1 2


Cross Staff reproduction

Document Type: Artifact
Geographic Location:
Date: 2005s
Creator: Unknown
ID Number: Cross_Staff_Model
Keywords: Navigation, Cross staff


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Description:
This working reproduction of a cross staff shows a scale along the staff and four different length cross pieces, so that different altitudes may be measured precisely. The height of the celestial body to be observed over the horizon determines which scale and arm is used.


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