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![]() Astrolabe The rete has a short index and four star pointers with trefoil of fleur-de-lis heads. A broad arc spanning one diameter of the rete has the abbreviated names of the zodiacal signs and an unnumbered scale. The rete is held in place by a rivet and there are do separate plates. The back has a degree scale similar to the front, and two quadrants of the remaining space are occupied by an unequal hour diagram and a double shadow square with scales 0 to 12 to 0 to 12 to 0, divided to 3, subdivided to 1, numbered by 3. Alidade with pinhole sights. See R. T. Gunther, The Astrolabes of the World (2 vols, Oxford, 1932), vol. 2, pp. 319-20. Jim Bennett |