G'day all,  I was lucky enough to win an eBay bid for a Duo-Art test
roll.  Now that I have the item in my hands it's noted on the leader
that it is "Number 3 roll".

Can someone tell me how many test rolls are required to make a set,
and would I need the whole set?  The Number 3 roll tests repetition,
sustain, speed, Theme and Accompaniment expression, and steps through
each of the expression levels of play.

Many thanks in advance.
Daniel Cox
Worrigee, NSW, Australia

P.S.: I have posted some clips of my Weber Duo-art on YouTube under
the name "DuoArtDanOZ"