Frontispiece to the Introductio geographica, by Petrus Apianus, 1532. The illustration depicts the use of a cross-staff, or Jacob's staff, to measure angles. The instrument was used in astronomy, navigation, and surveying.

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Creative#:

TOP22164914

Source:

達志影像

Authorization Type:

RM

Release Information:

須由TPG 完整授權

Model Release:

N/A

Property Release:

No

Right to Privacy:

No

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