Astrolabe is an elaborate inclinometer and can be considered an analog calculator capable of working out several kinds of problems in astronomy Stock Photo - Alamy
Free Astrology Birth Chart Calculator
Ancient Greek Astronomy Calculator Linked to the Olympic Games
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File:Vintage Radio Shack "Astro" Astrological Computer-Calculator, Model EC-312, Catalog No. 65-801, Made in Taiwan, Circa 1970s (12089184283).jpg - Wikimedia Commons