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021458

Astrolabe about AD 1345 - 1355 An astrolabe is an astronomical instrument that enables the user to determine the time during the day with the help of the sun, and at night with the help of the stars. It can also be used in the preparation of horoscopes and for surveying purposes – to name but a few of its functions.

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Irish Photo Archive
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Astrolabe about AD 1345 - 1355 An astrolabe is an astronomical instrument that enables the user to determine the time during the day with the help of the sun, and at night with the help of the stars. It can also be used in the preparation of horoscopes and for surveying purposes – to name but a few of its functions.