PURPOSE: To install and hold easily a film by providing a pair of engaging parts to be engaged to upper and lower perforations, and an engaging part which can be attached and detached to and from a cylindrical part, and also providing a holding means which can be wound to said cylindrical part.

CONSTITUTION: A hole 2d is pierced in the tip part of a fixed member 2c of an installing member 2, and when installing a film, the hole 2d is fitted into a screw 3, and when a spool 1 is rotated, the hole 2d is detained and installed to the head part of the screw 3. Also, each long arm part 2a of the installing member 2 is extended in the direction vertical to a shaft of the spool 1, and a screw 5 is fixed in the vicinity of its tip. A shaft of this screw 5 is engaged to a perforation P of a film F. Also, the installing member 2 is a metallic plate formed thinly in the same way as the film F and wound to the spool 1 together with the film F. In such a way, the film is installed and held easily.