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DE CHAULNES, Michel-Ferdinand d'Albert d'Ailly, Duke of. 'Description of a Microscope and Various Micrometers Designed to Measure Circular or Straight Parts with the Greatest Precision,' original issue of *Descriptions des arts et métiers, faites ou approuvées par Messieurs de l'Académie Royale des Sciences* [Paris] 1768. Folio, 19th-century half-shagreen with marbled covers, marbled endpapers, [ii] + 18 pp. with six full-page engraved plates and three hand-drawn sheets of notes and sketches bound at the end. Provenance Albert Nachet (ex libris on the flyleaf). Fine provenance for this classic work on microscopy. Two copies of De Chaulnes’s *Microscope* were in the Nachet collection. Lalande 504 Provenance: library of Jean-Nérée RONFORT (1943–2012)
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