This is a stethoscope that is intended for listening to a foetal heartbeat in the womb. It is loosely base on a wooden model owned by my wife's aunt, as you can see in more detail here: http://things.hands.com//thing/foetoscope
Make sure that you have support material for the raised section of the ear-end (in SFACT/Skeinforge you need Support Material Choice: Everywhere)
- Print this out
- Find a heavily pregnant, friendly woman -- or if you're pregnant, then just find someone who wants to listen to your bump.
- Apply the 'horn' end to the bump, and an ear to the flat end.
- Listen -- you're after something that's going at at least 120 beats a minute. Lower frequency, more whooshing noises are the mother's blood-flow.
Obviously, this is not an alternative to good medical advice -- don't use this as a tool to decide whether you need to consult a doctor.