LOTS of TBN'ers have Tiltmeters. There usually is a hot link to a special offer, but it seems to be under revision. You want Rick of R & B Manufacturing <A target="_blank" HREF=http://www.tiltmeter.com>http://www.tiltmeter.com</A>, home of the Original Tiltmeter. He's a fantastic guy. Tell him we here at TBN sent you.
I just got one from Steve Carver. He's running a special: $30 delivered to your door. Looks pretty slick, but I'll have to wait for warmer temps before using the tape.