How To Make a Spy Stethoscope
- February 13, 2008
- 7,482 Views
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Kip Kedersha
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Hear through walls with this High-Tech Electronic Spy Stethoscope for under $25!
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Comments (2)
Genius!
over 3 years ago by HeatherMenicucci
great idea! you can also get those condenser mics in an old cassette recorders if I'm not mistaken they have the same size, I have only one question does your mp3 have mic inputs or you plug it in your speaker output?
over 2 years ago by Roy_Darvin
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