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2. Stethoscope model​

Answer»

tion:Method 1 of 3: Making a Simple StethoscopeCover the top of a funnel with a balloon. ... Wrap electrical tape around the balloon to hold it in PLACE, if needed. ... STICK the end of the funnel into a piece of clear, FLEXIBLE, plastic tubing. ... ADD a second, matching funnel to the other end, if desired.



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