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<title> RIASSUNTO </title>Questo articolo identifica un disegno, eseguito da Antonio da Sangallo il Giovane, di un astrolabio costruito dal famoso astrolabista di Baghdad Khafif (850 d.C. ca.). Al Museum of the History of Science di Oxford è conservato l'unico astrolabio di Khafīf oggi esistente, del quale si pubblica una fotografia. Grazie alla notevole precisione della copia di Antonio e alla somiglianza di questa copia con la rete di un astrolabio anonimo, pure conservato a Oxford, sembra possibile confermare che la parte non firmata debba essere stata costruita dallo stesso Khafif. Il presente articolo conclude che l'astrolabio del disegno deve essere stato un lavoro tardo di Khafif, dato che è piú completo di quello di Oxford, con aggiunte apportate in Andalusia prima che Antonio lo vedesse.

Affiliations: 1: Columbia University


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