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ISO 7943-2:1987 Photography -- Overhead projectors -- Part 2: Transparencies and transparency frames -- Dimensions
standard by International Organization for Standardization, 11/01/1987
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Full Description
This part of the standard specifies the film type for transparencies and the dimensions of mounted and unmounted transparencies, including transparency frames, in order to ensure compatibility between the projectors and transparencies within each type of projector system described.