whitepine - sounds exactly like a Strip Tube Ruler.
belfry - as white pine says, the 1/2 sq triangle block must measure at 4-1/2"
sdeaaz - no -- fabric A inb my first posting called for 44" for the blocks and the border, of which 16" is allocated for the border. You need 28" of A for making the blocks in the quilt.
RJ - like the one with green B and blue print D.