LOT 94 Natrometer Morse Code Training Device, c. 1918
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Natrometer Morse Code Training Device, c. 1918The Natrometer Corporation, Washington, USA. Electromechanical version of the Omnigraph, with spring-driven aluminum drum with stack of nine rings with non-conductive coating except for the dots and dashes of several dozen Morse code characters, scanning via nine brass brushes, switchable at every fifth revolution via wood rods, with maker’s plaque on base, with all five rods and key, working.Morse-Code-Übungsgerät Natrometer, um 1918Hergestellt von The Natrometer Corporation, Washington, USA. Elektromechanische Version des Omnigraphs, bestehend aus federwerkbetriebener Aluminiumtrommel mit einem Stapel von 9 Ringen mit nichtleitender Beschichtung, außer an den Punkten und Strichen mehrerer Dutzend Morsezeichen, Abtastung mit 9 Messingbürsten, umschaltbar bei jeder fünften Umdrehung durch Holzstäbchen, Herstellerplakette am Boden, mit allen 5 Stäbchen und Schlüssel, funktionstüchtig.
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