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Home > February 2008 > History of John Smith's Chesapeake map full of twists and turns > Article Images
History of John Smith's Chesapeake map full of twists and turns

This replica 17th century magnetic compass, left, has a folding vane or
This replica 17th century magnetic compass, left, has a folding vane or "gnomon" that when oriented north/south tells sundial time by its shadow. Credit: Kent Mountford

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