Hey Jim,
There's another low cost multiplier option that Pete didn't mention. The Gladding/Cortland versions. Pic here:
<http://www.geocities.com/flysupplies/mult444.html>
Three different sizes I believe.
Orvis also did Battenkill series of multipliers if you want to spend a little more. These are harder to find.
Regards,
Bob
Fly Supplies
aflyshop.com