Acu-Rite 00613 Digital Hygrometer from Wal-Mart

[MrOneEyedBoh]

I would just get the one that pretty much everyone uses. and that would be the one posted above your post at wal-mart or these babies

http://www.cheaphumidors.com/p_digit...s_DIGITAL.html

You can find them cheaper if you look. Cigarmony.com has them too.