This is an amazing homebuilt ebulliometer for measuring ABV of beer etc.
http://homedistiller.org/forum/viewtopi ... 83&t=43241
I'd love to make something like that sometime! But my engineering is pretty shoddy
Found: DIY Build your Own Ebulliometer
Re: Found: DIY Build your Own Ebulliometer
https://web.archive.org/web/20030818083 ... cedure.htm has some nice information on the process