Device for interchanging lamps in projectors has a fixed casing and a support for two lamps moving between two end positions in relation to the fixed casing
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Holder for film frames (images)
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Slide projector
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DEVICE FOR TRANSFERING A SLIDE FROM A LONG MAGAZINE IN THE OPTICAL CHANNEL OF A SLIDE PROJECTOR
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LAMP BASE FOR PROJECTION DEVICES
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Compact folding microfilm reader - has hinged lid over two part base separating for access
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CONDENSER LENS FOR WORK PROJECTORS
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Episcope with high illumination - uses lens unit having many large aperture ratio lens elements near copy
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FILM PROJECTION DEVICE FOR MANY FRAME RATES
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Film winding device for coil-type developers
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Manually operable cutting device particularly for films
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Manual cutting device, especially for rounding the corners of X-ray images
