| 摘要 |
PCT No. PCT/JP84/00502 Sec. 371 Date Jun. 11, 1985 Sec. 102(e) Date Jun. 11, 1985 PCT Filed Oct. 20, 1984 PCT Pub. No. WO85/01918 PCT Pub. Date May 9, 1985.Disclosed herein is a trimming square set suitable for trimming photographic films, drawings or the like into arbitrary rectangular shapes. The square set utilized the rule that the four apices of a rectangle are invariably located on one circumference, permitting to form a rectangle of a desired size in an extremely facilitated manner by means of a first square member rotatably mounted on a base plate, a second square member rotatably mounted on a slide plate which is slidable on the base plate, and a circular hole provided in the base plate. Similar rectangles of different sizes can be formed easily by sliding the slide plate on the base plate.
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