FED-STD-365, FEDERAL STANDARD: FILM SLIDE, PROJECTION, PHOTOGRAPHIC, FORMAT FOR 50 MILLIMETER BY 50 MILLIMETER (2 INCH BY 2 INCH) (26-NOV-1975)

FED-STD-365, FEDERAL STANDARD: FILM SLIDE, PROJECTION, PHOTOGRAPHIC, FORMAT FOR 50 MILLIMETER BY 50 MILLIMETER (2 INCH BY 2 INCH) (26-NOV-1975)., This standard establishes the dimensions and characteristics for 50 millimeter by 50 millimeter (2 inch by 2 inch) projection film slides which have been adopted to achieve the highest degree of uniformity and standardization for the Federal Supply System. This standard classifies projection film slides as to picture size and slide thickness.