000004750 001__ 4750 000004750 005__ 20230914041702.0 000004750 0247_ $$2DOI$$a10.6083/M43B5XKW 000004750 037__ $$aDA 000004750 245__ $$aSimplitrol Portable Model Cambridge Electrocardiograph 000004750 269__ $$a1933 000004750 336__ $$aStill image 000004750 520__ $$aca. 1933? 000004750 520__ $$aMedical Museum Collection, Shelf 4C2 000004750 520__ $$aA "Simplitrol Portable Model Cambridge Electrocardiograph" in a wooden carrying case, manufactured by Cambridge Instrument Co. for the Ohio Institute for Medical Assistants. This is a string galvanometer type electrocardiograph. The mahogany case has a steel handle and two hoop-spring locks on the front side of the case which folds down for access. A brass nameplate gives the name of the instrument and manufacturer, and the model or serial number for the machine. The case has three fitted compartments, two metal and one wood. It has a mounted camera and a heavily insulated outlet cord and electric plug. The plug has a rubber cover marked "RA, LL, P, LA" for right arm, left leg, pulse, and left arm. Numerous loose instrument pieces include: 1) four electrodes, 2) three metal plates with terminal screws, measuring 3.7 x 6 cm, 3) grooved circular metal plate with hard rubber insulated handle and terminal screw, 4) one cartridge of No. 30 Canco photographic paper, 5) removable metal drum, for receiving the exposed film, 6) electrocardiograph lamp bulb, 2A-14V, marked with date and manufacturer "1933 GE," 7) rubber-insulated electric cord with on/off switch, 8) silk-covered jump cord with an alligator clip in a rubber handle at one end and a terminal clip at the other, 9) three small envelopes, containing a blown fuse, a perforated red rubber strip, three black perforated plastic strips, a tube of Cambridge Electric jelly, and a flat black plastic reel. The case and permanent fittings are in good condition. Rubber and plastic parts have hardened and the photographic paper has stiffened. Some parts show corrosion. The case key is missing. 000004750 520__ $$aDigital photograph of a "Simplitrol Portable Model Cambridge Electrocardiograph," a 1930's-era string galvanometer type electrocardiograph. The instrument is shown in its original mahogany carrying case. Three small envelopes containing parts have been propped against the front of the case. A ruler has been placed in the foreground for size comparison. 000004750 540__ $$fCC BY 000004750 542__ $$fIn Copyright 000004750 650__ $$aDiagnostic Equipment$$031824 000004750 650__ $$aElectrocardiography$$018280 000004750 7001_ $$aCambridge Instrument Company 000004750 8564_ $$972b0b412-cad7-48c5-bfa5-18e7bf652b3d$$s54974$$uhttps://digitalcollections.ohsu.edu/record/4750/files/f882934e8ed398580b9395a08987d78c.jpg 000004750 905__ $$a/rest/prod/1j/92/g7/81/1j92g781d 000004750 980__ $$aHistorical Collections and Archives