Projector lens adapters and lens turrets are often out of alignment with the film plane. This will result in a screen
image that is not uniformly sharp across the entire picture. This mis-alignment can, in some cases, result in
a completely unacceptable image. In most cases correcting the lens alignment can offer improvement in image
The Schneider Projector Lens Alignment Gauge is designed to check lens and turret alignment, and measure
what adjustments are necessary to bring them into true alignment.