Mike, that thing was kinda hard to find. I found it at a place called "Juniors Tools" in Mesa, AZ. <A target="_blank" HREF=http://www.lifestyle.ninemsn.com.au/ourhouse/factsheets/db/gizmosandgadgets/04/409.asp>Here is</A> the only reference on the net I could find. I think the one I use is a Bosch. I would think any Bosch dealer could order it for you. I believe it is called the "Bosch Digital Gradient O'meter" or something like that. I think it was $125. Good Luck.
<P ID="edit"><FONT SIZE=-1>Edited by TimHayosh on 07/19/01 05:52 PM (server time).</FONT></P>