using an alidade.avi

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Uploaded by on Apr 24, 2010

the alidade is a handy and simple device used to measure altitude

this one is printed on the back of a modern astrolabe
(£7 from http://www.onbrightsky.co.uk/stuff.htm)
and is used to help you name te stars

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Science & Technology

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  • Good stuff, what kind of material is the Astrolabe printed on? Is it card, or plastic. Thank you.

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