| 摘要 |
PROBLEM TO BE SOLVED: To provide a stereophotographic see-through device for advertisement and propaganda used for advertisement and propaganda. SOLUTION: The stereophotographic see-through device for advertisement and propaganda as stated in claim 1 is constituted by arranging a frame and a glass pane, a glass rod and a sheet within this frame, pressing and fixing these by a back plate and printing the sheet with three kinds of different characters so as to alternate the regions divided at specified intervals in such a manner that, when the characters are viewed through the glass rod, three kinds of the characters can be discretely viewed depending upon viewing directions.
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