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30 abr 1594 año - back staff
Descripción:
The backstaff is a navigational instrument that was used to measure the altitude of a celestial body, in particular the sun or moon.
Añadido al timeline:
history project
By
omar cardeanas
13 nov 2017
0
0
356
fecha:
30 abr 1594 año
Ahora mismo
~ 430 years ago
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