| 摘要 |
On a center of the front surface of a positioning member 10, positioning projections 25a to 25d are provided in line in such a manner as to project therefrom. On both a left and a right sides of the positioning projections 25a to 25d, scales 27a displaying metric paper sizes and scales 27b displaying inch-based paper sizes are inscribed. The positioning member 10 is horizontally inverted through 180 degrees and a direction indication line 29a on the scale 27a side or a direction indication line 29b on the scale 27b side is aligned with a fitting reference line 30 for fixation to the positioning member 10, thereby permitting switching between positioning for a metric paper size and positioning for an inch-based paper size.
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