The ABCs of Time – A Guide and History of Sector Dials
Sector dials as we know them today are a 20th-century development, although the concept has been seen throughout history to separate dial elements into "sectors" for astronomy and science.
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Sector dials as we know them today are a 20th-century development, although the concept has been seen throughout history to separate dial elements into "sectors" for astronomy and science.
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Sector dials as we know them today are a 20th-century development, although the concept has been seen throughout history to separate dial elements into "sectors" for astronomy and science.
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