MATHEMATICAL INSTRUMENTS - CORADI, 6 VOLUMES

i. Henrici, Olaus Magnus Friedrich Erdmann (1840-1918). Der Harmonische Analysator construirt von G. Coradi in Zürich mit einer Theorie desselben von Prof. O. Henrici in London. Zurich: C. Aschmann, 1894, small 4to, original wrappers, (bought from The Antiquarian Scientist, 2002), [T&W H106], library stampsii. Coradi, Gottlieb (1847-1929). Les planimètres Coradi. Systèmes Hohmann-Coradi et Lang-Coradi. Théorie générale... Zurich: G. Aschmann, 1897, 8vo, original wrappers, (bought from Librairie Alain Brieux, Paris, 1991), [T&W C182], wrappers torn with some loss and upper wrapper detachediii. Coradi, Gottlieb (1847-1929). Les planimètres Coradi. Systèmes Hohmann-Coradi et Lang-Coradi. Théorie générale... Zurick: Aschmann & Scheller, 1904, 8vo, later morocco, bound with other works on planimeters by, or issued by, A. Lefrancois, L.A. Ott and Marcel Deberon, original wrappers bound in, (bought from Librairie Alain Brieux, Paris, 1997), [T&W C183, D22, L55, O33], some dampstaining to bindingiv. Grünert, Artur (1882-). Coradi’s detail coordinatograph. Zurick: Aschmann & Scheller, [1912], 8vo, original wrappers, [T&W G96], wrappers detached and with some lossv. Henrici, Olaus Magnus Friedrich Erdmann (1840-1918). Analyseur harmonique construit par G. Coradi à Zurich avec une théorie de Mr. le Professeur O. Henrici à Londres. Zurich: Aschmann & Scheller, 1915, second edition, small 4to, original wrappers, (bought from Brieux, Paris, 1996), [T&W H105]vi. Coradi, Gottlieb (1847-1929). Catalogue des instruments mathématiques de précision. Zurich: Institut Mécano - Mathématique G. Coradi, 1918, first edition, small 4to, original wrappers, (bought from Librairie Alain Brieux, Paris, 1996), [T&W C181]

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A group of works about planimeters: the instruments used to measure the area inside a closed curve. The Zurich firm of G. Coradi was one of the finest instrument makers at the end of the nineteenth and early twentieth century, and particularly known for their planimeters.