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en.wikipedia.org/wiki/Astrolabe

An astrolabe is an elaborate inclinometer, historically used by astronomers and navigators, to measure the inclined position in the sky of a celestial body, day or ...

alabe.com/freechart/default.asp

Astrology: Free Natal Chart (Horoscope) from Astrolabe, the leader in automated birth chart reports, relationship reports, and transit and progressed horoscope ...

alabe.com

Astrology Software and Professional Astrology Programs, Reports, Books, Gifts, Jewelry, Education, Services by Astrolabe Inc. the largest publisher of Computer  ...

www.astrolabes.org

Astrolabes are used to show how the sky looks at a specific place at a given time. This is done by drawing the sky on the face of the astrolabe and marking it so ...

www.astrolabes.org/pages/history.htm

Following is a very brief overview of the history of the astrolabe. See the Links page for references to much more detailed and comprehensive treatments.

www.ted.com/talks/tom_wujec_demos_the_13th_century_astrolabe

Rather than demo another new technology, Tom Wujec reaches back to one of our earliest but most ingenious devices -- the astrolabe. With thousands of uses,  ...

cse.ssl.berkeley.edu/AtHomeAstronomy/activity_07.html

An astrolabe (pronounced AS'-tro-layb) is a device used for measuring altitude, including the height of objects in the sky. This activity covers the construction of ...

www.smithsonianmag.com/innovation/astrolabe-original-smartphone-180961981

Jan 31, 2017 ... Like the smartphone, the astrolabe came into being during times of economic prosperity—in that case, likely during the height of the Roman ...

www.britannica.com/science/astrolabe-instrument

astrolabe: any of a type of early scientific instrument used for reckoning time and for observational purposes. One widely employed variety, the planispheric ...

www.merriam-webster.com/dictionary/astrolabe

Define astrolabe: a compact instrument used to observe and calculate the position of celestial bodies before the invention of the sextant.