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Chief stacker Printable version

https://www.controlbooth.com/wiki/Chief-stacker

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Colloquial term for a three-tiered projector mount from Chief Manufacturing.

View attachment 3576
From Adjusta-Set Slide Stackers - ASU Series (discontinued):
Chief’s ASU Adjusta-Set Slide Stackers accommodate Kodak Ektagraphic III projectors. For Ektapro projectors, see model ASE.
  • Available in one-tier, two-tier and three-tier models, with optional additional levels
Click to expand...
For multi-image projection, it is imperative that all projectors on the same portion of the screen be aligned (overlapped) precisely. The stacker provides precise pitch and roll adjustments so that the images from all three projectors exactly overlapped, allowing dissolves with no up/down or left/right movement.

Discussion at http://www.controlbooth.com/forums/question-day/21386-what-69-a.html .