Quote Originally Posted by mark
I have the one from edmund scientific too and it is the onl one I will ever need to buy.

http://scientificsonline.com/search....ench&x=12&y=14

As Edmund Scientifics say they are SOLD OUT/Temporarily Out of Stock
You might consider Micro Tools:

http://www.micro-tools.com/Merchant2...&Store_Code=MT

Unless you already have.