Hi all.  I am seeking a "piano keyboard ruler" such as the one used
by Rudy Martin as shown in the music roll chapter of "Player Piano
Treasury" by Harvey Roehl.

Thanks to MMD and everyone who responded about my query for an empty
Duo-Art.  I have found several nice examples.  As time permits, I will
explain my project.

Andy Taylor
Tempola Music Rolls.

 [ Images of tracker bars and related scale sticks are at the MMD Tech
 [ site, http://mmd.foxtail.com/Tech/  Go to "Tracker bar scales",
 [ then "AmpScaleStick.html"  -- Robbie