Precession Dials show a ring in the northern and southern sky marked in 1000 year increments depicting the rotational axis "wobble" of the Earth over its 26,000 year cycle.
Keiron Smith
Precession Dials show a ring in the northern and southern sky marked in 1000 year increments depicting the rotational axis "wobble" of the Earth over its 26,000 year cycle.
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