I can't give you the measurements, or show you how to make one, wish I could. But I think it is alright if I tell you, that each square is 2 1/2 in before sewing. There are 8 in a row, and 8 rows to each block, hope that helps. Here is where I found the pattern though. It is from a book called QUILT-LOVERS FAVORITES., VOL 10 From American patchwork and quilting. it is published by better homes and gardens.
also, here is a link to the Carpenter's Wheel
http://www.quilterscache.com/C/Carpe...heelBlock.html
You can see where they are alike and where they are different. :-D