feb 16, 1492 - Columbus first voyage

Description:

Columbus set sail in an era of maritime advances, charting his route with the aid of a mariner’s compass, an astrolabe, a cross-staff, and a quadrant. The most popular map for mariners at the time was Ptolemy’s Geography or Cosmography, printed in 1482 but originally compiled by the Alexandrian geographer, astronomer, and mathematician Claudius Ptolemy in the second century A.D.