On About. Com I found a reference to a Pinwheel quilt and
* 1-7/8" squares produce 2" miniature blocks
* 2-7.8" squares produce 4" mniature blocks
*3-7/8" squares produce 6" small blocks
*5-7/8 " squares produce 10" blocks
*6-7/8 squares produce 12" blocks
*7-7/8 squares produce 14" blocks