1931 · Kempten
by Ott, A.
Kempten: A. Ott, 1931. Ott, A. Der harmonische Analysator Mader-Ott. Kempten: A. Ott, [1931]. Original printed self-wrappers. [2], 17 [1]pp. Text illustrations. 211 x 147 mm. VG. Provenance: Theodore von Kármán. Inscription in unidentified hand on back wrapper. A description of the harmonic analyzer manufactured by the German firm of A. Ott. This firm produced analog computers during World War II. Origins of Cyberspace 352. . (Inventory #: 44662)