HammerOfLight - 27-7-2013 at 09:00
I bought this, and restored it, it works, not as sensitive as a modern unit, but I repaired the wood case, and cleaned it up, looks beautiful.
https://www.etsy.com/listing/157069577/antique-1940s-electro...
![Cardiogram1.jpg - 168kB](https://www.sciencemadness.org/whisper/files.php?pid=293862&aid=24541)
more pics at the ETSY website, I am negotiable on the price.