STÖFFLER (Johann). Elucidatio fabricæ ususque astrolabii. Oppenheim, Jacob Cobel, 1524. In-folio, (10) ff; 78 ff, modern ivory vellum bradel, handwritten title on spine. The most important Renaissance treatise on astrolabe making and astronomical calculations. Second Latin edition, with beautiful illustrations. Small wormholes, paper defects on ff. 20 and 68. Some foxing and stains, few shorter ff., small lack of a folding element on folios 6 and 21.

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