title: The bullet oscilloscope: the ORM-1 of "E for M".
mesh_terms: D000758:Anesthesia / Q000266:history*; D055984:Cathode Ray Tube / Q000266:history*; D004562:Electrocardiography / Q000266:history* / Q000295:instrumentation*; D004582:Electronics, Medical / Q000266:history; D049673:History, 20th Century; D016343:Monitoring, Intraoperative / Q000266:history* / Q000295:instrumentation*