Illustration of a declination compass or declinometer. The compass was used to measure the angle between the geographic and magnetic poles of the Earth. Image published in Physique Populaire (Emile Desbaux, 1891).
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Details
Creative#:
TOP26387406
Source:
達志影像
Authorization Type:
RM
Release Information:
須由TPG 完整授權
Model Release:
N/A
Property Release:
N/A
Right to Privacy:
No
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