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This instrument is clear evidence of the links between the astrolabe and astrology. On one side is an astrolabe for a single latitude, and on the other an astrological volvelle, used to find the positions of planets and other celestial bodies, especially in relation to the traditional astrological houses.

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1570: A rare 16th century gold sundial and compass ring, possibly German, The hinged oval bezel designed as a seal and engraved with a coat of arms, opening to reveal a sundial and compass, on a plain gold hoop, dimensions of bezel 1.8x2.0cm

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Astronomical Compendium Signed by Johann Anton Linden Dated 1596; Heilbronn Gilt brass; 75 x 146 x 20 mm

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Primitive Navigation Without a Map or Compass

Primitive Navigation Without a Map or Compass by Survival Life at http://survivallife.com/2015/08/12/primitive-navigation/

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