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P3D Projector Polarizers

>>I have been wondering about the
glass polorizers in my Compco Triad projector.  Are they prone to the same
amount of fading over the years as the plastic polorizers found in the TDC
projectors?

They probably are to some extent. Polarizers in glass are just that,
plastic filters mounted between glass which may offer some additional
protection. There are no solid glass polarizers because of the way
polarizers are manufactured.

RM



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