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jul 15, 1594 - Backstaff

Description:

The Back Staff is a navigational tool that was used to measure the altitude. The backstaff was created by Captain John Davis.

Added to timeline:

Aaliyah Lopez

ByAaliyah Lopez

4 Nov 2017

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458

Date:

jul 15, 1594

Now

~ 432 years ago

Images:

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