| 摘要 |
<p>The mounting frame for a film slide is pref. made from plastics and comprises two cooperating rectangular frame elements (1, 1a) which sandwich the slide between them. One of the frame elements (1, 1a) has two grooves (5), running along the upper and lower longitudinal edges of the frame aperture (4), on the surface facing the film slide. Two rods are inserted in these grooves (5) and able to slide by a limited amount along the latter, each of the rods provided with a number of spaced projections (7), which fit through the film slide perforations. Pref. a number of apertures are located at the side of and parallel to the grooves (5), into which projections of the other element fit.</p> |
