Bernie Cook wrote:
~snip~
batten for laying out long
curves and being able to put on the wood to transfer it .I have read of
these items but have no found what we are looking for .

Look into "The Gougeon Brothers on Boat Construction" page 118 (of the
2nd edition) or so. They show a simple method of transferring curves
layed out using flexible wooden battens. You should be able to find the
book at www.westsytem.com