MEASURING INSTRUMENTS - PLANIMETER. H. DE MORIN, LES APPAREILS D'INTÉGRATION, 1913, AND WORKS BY DEBÉRON, COX ETC

i. Morin, Henri de. Les Appareils d'Intégration. Intégrateurs simples et composés. Planimètres; intégromètres; intégraphes et courbes intégrales; analyse harmonique et analyseurs. Paris: Gauthier-Villars, 1913 [T&W M130]ii. Debéron, Marcel. Théorie et Mode d'Emploi des Planimètres et Integrateurs Mécaniques. Paris, 1920 [T&W D21]iii. Cox, William. The polar planimeter. A manual. New York: Keuffel & Esser, 1891 [T&W C196]iv. Cox, William. [Another edition]. Keuffel & Esser, inscribed "1894" [T&W C196bis]v. Scott, Robert Henry (1833-1916). "On the employment of a planimeter to obtain mean values from the traces of continuously self-recording meteorological instruments" [in:] Proceedings of the Royal Society of London, vol. 22 (1874), [T&W S71]vi. Tinter, Wilhelm Robert (1839-1912). Ein Beitrag zur Kenntniss der Leistungsfähigkeit der in der Praxis hauptsächlich verwendeten Planimeter. Vienna: Zeitschrift des osterr. Ingenieur & Architeckten Vereins, 1877, [T&W T42]vii. Walther, Alwin (1898-1967). "Mathematische Gerate zum Integrieren", [in:] Zeitschrift des Vereins Deutscher Ingenieure, vol. 80 (1936), [not in T&W; Origins of Cyberspace 402] all 8vo, 5 in publishers' wrappers, some dust-marking to wrappers

Morin: bought from Rogers Turner, London, 1990

Condition is described in the main body of the cataloguing, where appropriate
"In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. Since we are not professional conservators or restorers, we urge you to consult with a restorer or conservator of your choice who will be better able to provide a detailed, professional report. Prospective buyers should inspect each lot to satisfy themselves as to condition and must understand that any statement made by Sotheby's is merely a subjective, qualified opinion. Prospective buyers should also refer to any Important Notices regarding this sale, which are printed in the Sale Catalogue.
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