| 摘要 |
A unitarily constructed folding viewer suitable for use with circular viewing discs. The structure includes a pair of major body portions hinged at one end and adapted to be joined with a clearance therebetween. A foldable top member, as well as side and end flaps are hinged to one another and to one of the body portions. Cooperative tabs extending from the body portion and top member are mated with slots in the side and end flaps to form the assembled viewer. A retainer integral with the body portion secures the end flaps when nestled above folded side flaps and top member.
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