Signal Recorder Type 256
name: label: user
content: Boas, Norman F.
label: maker
content: General Radio Company
notes: label: Description
content: Ernst Philip Boas (1891-1955) was an American physician, pioneer in the fields of pathology and physiology, and expert in chronic heart diseases. In 1928 he and his colleagues developed the cardiotachometer, a widely used instrument for measuring the rapidity of heartbeat. This signal recorder was made by the Production Instrument Company in Chicago. Norman F. Boas, the donor, described it as “the original Cardiotachometer” developed by his father, in 1928.
label: Description
content: Ref: Ernest P. Boas and E. F. Goldschmidt, The Heart Rate (1932).
label: Description
content: “Ernst Boas Dead; Heart Specialist,” New York Times (March 10, 1955), p. 27.
label: Location
content: Currently not on view
place: label: place made
content: United States: Massachusetts, Cambridge
setName: label: See more items in
content: Medicine and Science: Medicine
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1984.0638.01.01
label: accession number
content: 1984.0638
label: catalog number
content: 1984.0638.01.01
objectType: label: Object Name
content: Recorder, Signal
label: Other Terms
content: Recorder, Signal; Medicine
physicalDescription: label: Measurements
content: overall: 3 1/2 in x 15 1/2 in x 7 3/4 in; 8.89 cm x 39.37 cm x 19.685 cm