Transactions of the Bristol and Gloucestershire Archaeological Society . Ficf. 1 W. W. She at ferit. PLATE 2. 11. Iig,2. WW:SJcrat. fecit. Remarks ox ax Astrolabk. 9 for measuring the heights of mountains and buildings, and dis-tances generally ; for ascertaining latitudes, for the determinationof time ; for the construction of horoscopes ; and for divers otheroperations connected with the sciences of Astronomy and JudicialAstrology. In Mahommedan Asia one of its chief uses was, andis still, the ascertainment of the exact position of Mecca as regardsthe place of the observer. In the east it re
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Transactions of the Bristol and Gloucestershire Archaeological Society . Ficf. 1 W. W. She at ferit. PLATE 2. 11. Iig, 2. WW:SJcrat. fecit. Remarks ox ax Astrolabk. 9 for measuring the heights of mountains and buildings, and dis-tances generally ; for ascertaining latitudes, for the determinationof time ; for the construction of horoscopes ; and for divers otheroperations connected with the sciences of Astronomy and JudicialAstrology. In Mahommedan Asia one of its chief uses was, andis still, the ascertainment of the exact position of Mecca as regardsthe place of the observer. In the east it retains its time-honouredpre-eminence among astronomical instruments, though it haspassed from the hands of the man of science to those of the super-stitious interpreter of the stars; into Europe, where it is nowforgotten, it was introduced by the Arabian conquerors of Spain, but does not seem to have been in general use till the beginningof the fourteenth century.^ In the middle of that century it musthave been commonly employed ; the accurate construction of thetwo instruments in the British Museum, one beari