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Title Cammann differential stethoscope
Year Range from 1850
Year Range to 1889
Description Binaural differential stethoscope. Nickel-plated metal ear pieces with ivory tips united by a hinged joint; silk and rubber covered coil spring tubes connect to ear pieces and terminate, each, in large wood trumpet shaped chest piece; marked on hinged joint: "Dr. Cammann's stethoscope."
Notes One ear piece tip missing. Trade catalog lists this instrument as Alison's stethoscope.
Dimensions W-12.5 L-53.8 cm
Dimension Details 53.8 x 7.5 (joint) x 12.5 cm
Manufacturer or Distributor Scott Alison (designer)
Object ID 0025
Accession number 0025
People Cammann, George P. (1804-1863)

Alison, Scott
Search Terms Stethoscope
binaural
auscultation
Lexicon category Auscultation
Lexicon sub-category Stethoscope
Object Name Binaural
Length (cm) 53.8
Material metal (nickel-plated), rubber, wood, silk