Regulateur, Signed (3 results)

Couverture rigide. Condition: Très bon. Ed. originale. 1 volume reliure demi basane havane à petits coins de l'époque, dos lisse orné, 487 pages, avec 2 grandes planches dépliantes, signature autographe de l'auteur au verso de la page de titre. Bien complet du rare petit carton imprimé à fenêtres du régulateur (unités). Edition originale. Bel exemplaire. Signé par l'auteur.

Hardback. Condition: Very Good. None (illustrator). First edition. Two very scarce works from French watchmakers bound together, with 'Recueil de Tables Progressives pour les Vibrations du Regulateur' signed by Chastel himself. Two very scarce works, both in the original French, from French watchmakers.These vanishingly scarce works facilitating wheelwork calculations for watch and clockmakers.The first work is the 1817 first edition of horologer Francois Chastel's 'Recueil de Tables Progressives pour les Vibrations du Régulateur'. Signed by Chastel himself to the tail of the final leaf of the preface. Chastel signed all copies, 'as this work requires a lot of accuracy in printing'.His work presents a table of vibrations and revolutions of parts of watches, with information derived from years of study. The introduction notes that 'some of his results move away a little from the rigorous precision towards which the Mathematician tends; but they have sufficient accuracy for all watchmaking needs'.The second work is the 1805 second edition of horologer Francois Arlaud's work on the mechanics of watchmaking, written after spending a number of years observing the construction methods of workers in watch factories. His tables present the revolutions of cogs and wheels within watches.Two very scarce works bound together, and held in a cloth covered clamshell box.With the bookplate of Leon Leroy to the front pastedown, and the inscription of Henry Alliez to the front free endpaper. Contemporary inscriptions and notations to the verso of the first title page, and the head of page 1 of the first work. Further notations to page 20 of the second work. In paper covered boards, held in a cloth covered clamshell box. Bumping to back strip head and tail, with paper label to back strip lightly age toned. Clamshell box in excellent condition. Bookplate to front pastedown, with inscription to front free endpaper. Internally, firmly bound. Pages a touch age toned, but generally clean and bright. Contemporary inscriptions and notations to the verso of the first title page, and the head of page 1 of the first work. Further notations to page 20 of the second work. Very Good. signed by author. book.

A Bordeaux / à Avignon et se trouve à Paris, de l'Imprimerie de J. Foulquier / chez M. Ray / chez M. Courcier, 1809. Un fort vol. au format in-8 (202 x 132 mm) de 533 pp. Reliure de l'époque de pleine basane racinée blonde, plats jansénistes, dos lisse orné de semis de petits fleurons verticaux dorés, doubles filets verticaux dorés, pièce de titre de maroquin brun, titre doré, jeu de petits filets obliques gras et maigres dorés sur les coupes, tranches jaunes. Edition parue à la date de l'originale ; revêtue au revers du faux-titre de la signature autographe de l'auteur. L'ouvrage trois grands tableaux dépliants ainsi que la signature autographe de l'auteur. Table : Mesures de pesanteur - De longueur - De surface - Agraires - De solidité - De capacité - Pour les liquides - Monnaies. Quérard VI, La France littéraire, p. 581 - Monglond VIII, La France révolutionnaire et impériale, 57. Angles et coupes élimés. Début de fente aux mors supérieurs (sans conséquence). Dos présentant un éclat légèrement altéré. Rares rousseurs dans le texte. Petite tâche sombre en marge supérieure d'un feuillet. Du reste, belle condition.