>From David Artman: >BUT... I haven't seen anyone else derive the Base from the > previous piece's Base. That's where I think all these other > formulas go wrong: they are looking for a consistent formula > for any given pip count X, but I do not think that is how > they were originally invented. But by going *just* on what's > been published about dimensions for 1, 2, and 3 pips, and > suspecting that the 1 Height = 3 Base is the *only* intentional > relationship; I think Base(x) = Base(x-1) + 0.21875 is the best > way to figure any other sizes. A few things: 1. Your formula needs a starting point, perhaps something like... Base(x) = [ 0.5625 ; if x=1 (or maybe you want to start at x=0 or -1) [ Base(x-1) + 0.21875 ; if x!=1 2. That recursive formula is equivalent to the standard... Base(x) = 0.34375 + 0.21875*x I could prove that by induction if you want to see it. 3. I would bet that the Height(3)-Height(2)=Height(2)-Height(1) and Base(3)-Base(2)=Base(2)-Base(1) were intentional relationships. Ryan