LOT 0413 5 Scientific Instruments, c. 1890
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5 Scientific Instruments, c. 1890 1) Mirror galvanometer, Nalder Bros & Co, Westminster, original lacquered brass, height 10 4/5 in. - 2) Torsion galvanometer, Siemens & Halske, Berlin, after Dr. O. Fröhlich, No. 1961, one of the first instruments for measuring direct current in Danielle, mahogany base, original lacquered brass parts, in glass cylinder, height 8 3/4 in., thread missing. - 3) Mirror galvanometer, J.P. Hauser, ebonised and original lacquered brass, without glass cover, height 5 3/4 in. - 4) Physical instrument, Griffin & Tatlock Ltd, London, exact function unknown, 2 electrical connections, 2 interconnected closed glass cylinders, filled with liquid and crystals, under glass cover, height 6 1/2 in. - And: 5) Needle galvanometer, unmarked, fruitwood base, silvered scale, needle on long cocoon thread, under glass dome, height 10 1/2 in. 5 wissenschaftliche Instrumente, um 1890 1) Spiegelgalvanometer, Nalder Bros & Co, Westminster, original zaponiertes Messing, Höhe 27,5 cm. - 2) Torsionsgalvanometer, Siemens & Halske, Berlin, nach Dr. O. Fröhlich, Nr. 1961, eines der ersten Meßgeräte zur Messung von Gleichstrom in Danielle, Mahagonisockel, original zaponierte Messingteile, in Glaszylinder, Höhe 22 cm, Faden fehlt. - 3) Spiegelgalvanometer, J.P. Hauser, schwarz lackiertes und original zaponiertes Messing, ohne Glashaube, Höhe 37 cm. - 4) Physikalisches Instrument, Griffin & Tatlock Ltd., London, genaue Funktion unbekannt, 2 elektrische An-schlüsse, 2 miteinander verbundende geschlossene Glas-zylinder, mit Flüssigkeit und Kristallen gefüllt, unter Glashaube, Höhe 16,5 cm. - Und: 5) Nadelgalvanometer, unbezeichnet, Obstholzsockel, versilberte Skala, Nadel an langem Kokon-Faden, unter Glasdom, Höhe 26,5 cm. Start Price: EUR 350
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