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#5
07-21-11, 06:31 PM
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A poor (or lazy) mans stethescope
To isolate the source of a sound you can even use any old rubber hose.
One end near your ear, and you will be hearing whatever is near the other end of the hose. Crude but effective. D
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David Wartofsky Potomac Airfield 10300 Glen Way Fort Washington, MD 20744 
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