In article ,
Andy Dingley wrote:
It's worth buying a cheap [stethoscope] from a medical shop.

Don't waste your time with a medical stethoscope - the design of the
bells is different, so as to make them useful for listening to
widespread sounds from squishy things. If you're after mechanical noise,
get a mechanic's stethoscope with a rigid probe connected to a diaphram.

How much are those?

I've found a cheap medical type far better than the tube method and less
dangerous and as effictive as the screwdriver trick.

--
*Many hamsters only blink one eye at a time *

Dave Plowman London SW
To e-mail, change noise into sound.