http://www.amazon.com/Calculated-Ind...ters+fabricalc
I ordered this fabric calculator and haven't yet used it...hope to soon. It has a great user's guide, tutorial DVD, pocket reference guide with a convenient storage slot in the back of the calculator. I also like the flip open top that has a quick reference guide on the inside that has user friendly guides on the keystrokes to make for finding out quilt yardage, block yardage and square yardage.