I remember reading a thread a few months ago where some one asked if you could use a stethascope to hear the chicks heart beat while it's in the egg. One person posted a link to an electronic device that will measure it, but it was only sold in the UK. Does any one have the link or the name of that device. I want to see if I can buy one, how much it costs etc. I did a search on BYC and I can't find the old thread. Help please, and Thank you.