Assertion: stethoscope's tube | /r/HasProperty | jaquesindia-rubbercatheters
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text: For example, in 1884, E. T. Aydon Smith described a stethoscope he invented: "..the chest-piece of which is formed by a pair of ear-specula, the tubes are Jaques' India-rubbercatheters, and the ear-pieces those of an otoscope."He designed his instrument to be used as a simple binaural, a differential stethoscope (by using one of the ear-pieces and chest-pieces for each ear), a tourniquet (by wrapping the rubber around the arm) and, also as a urinary catheter for both males and females.