On Tue, 10 Jun 2008 11:38:51 -0700 (PDT), Quadibloc
wrote, in part:

My memory was right - green and buff for Checkers. Also, the pieces
need to be red and *white*, and the squares 2 inches in size, and the
pieces from 1 1/4 to 1 1/2 inches in diameter.

For Chess, the squares can be from 2 inches to 2 1/2 inches; as to the
size of the pieces, the guidelines are complicated, (3 3/8" to 4 1/2"
height for the King, and a base from 40% to 50% of that height) but
one manufacturer recommends the base of the King should be about 75%
of the size of the square for a good match.

I have pursued my researches further, and found out what the Federation
Mondiale du Jeu de Dames has as its tournament standards for
International Checkers - their standards are, of course, metric - and
the FIDE standards for chess, which call for somewhat smaller chess
pieces than the USCF ones, although there is considerable overlap.

The results of my researches are on the bottom of the page at

http://www.quadibloc.com/other/cnv03.htm

John Savard
http://www.quadibloc.com/index.html