[ Ref. Chris Grant in 180909 MMDigest ]

The 16 hole group in the center of the tracker bar are the triggers
for the tracking pneumatic bellows.  A fairly badly edge tattered roll
(both edges) will be tracked from the center note holes.  I have one
of these pianos; I've not seen another for 45 or more years.

Tom Binnall
Auburn, Washington

 [ Tom wrote in 180907 MMD, "I've been using convertible car cloth
 [ material, with no failures, for the past 3 centuries."  He explains,
 [ "Jody, I'm 93.  If I want to exaggerate at my age, I'll do it! <lol>"
 [ -- Robbie