My friend bought the variometer and not the audio/battery box and has asked me to help him find it on the internet.

Can anyone here help me with this?

I have searched, but it seems the unit is old and no one is that interested in them anymore. He wants it to complete a kit he has been working on for some time.

If anyone has a DIY kit for building this box, I may be able to use that to help him too.

Please email me?
Thanx!