Ernst Philip Boas (1891-1955) was an American physician, pioneer in the fields of pathology and physiology, and expert in chronic diseases of the heart. In 1928 he and his colleagues developed the cardiotachometer, a widely used instrument for measuring the rapidity of heartbeat. An inscription on this early example reads “BOAS-ALLIED / CARDIO-TACHOMETER / ALLIED LAB INST. INC. / 115 VOLTS 60 CYCLES 150 WATTS / MODEL BAC-4.”

Ref: “Ernst Boas Dead; Heart Specialist,” New York Times (March 10, 1955), p. 27.

(for archival materials see NMAH.AC.0881)

Date Made: 1928

Inventor: Dr. Ernest P. BoasMaker: Allied Laboratory Instrument, Inc.

Location: Currently not on view

See more items in: Medicine and Science: Medicine


Exhibition Location:

Credit Line: Gift of Norman F. Boas, M.D.

Data Source: National Museum of American History

Id Number: 1984.0638.04Catalog Number: 1984.0638.04Accession Number: 1984.0638

Object Name: CardiotachometerOther Terms: Cardiotachometer; Medicine

Measurements: overall: 10 in x 16 in x 20 in; 25.4 cm x 40.64 cm x 50.8 cm


Record Id: nmah_737333

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