For years I have been using and recommending fine-mesh Nylon(?)
computer glare screen material as a superior replacement for the
old brass wire screening used as original material in Wurlitzer
tracker bars.

The brass screen tends to curl up and fall off, ending up down in
the works of the organ, when you remove the tracker bar for cleaning.
The glare screen stays put and can be cleaned of paper dust by
a simple in-place brushing with a make-up brush or the like.  And
it gives a much better seal than the thicker brass screen does.

Having run out of glare screen material -- and finding only glass
glare screens on the market today -- I looked around for a source of
fine-mesh material to fill the occasional request I have been getting
for tracker bar screen.  Small Parts Inc.'s polyester or nylon screening
in 95 or 105 micron size fits the bill perfectly.  I recommend it highly.

Matthew Caulfield (Irondequoit, New York)