| 摘要 |
<p>Educational or entertainment appts. includes a film strip carrying a series of questions on one surface and answers on the other and arranged for reading the questions and anwers as desired. The appts. consists of housing of rectangular shape formed from two moulded parts (4a & b). The housing contains the film (3) carried on spools (2) with a small strip portion of the film exposed for viewing. Each part of the housing is provided with a viewing slot (8, 9, 10) so that by rotating a spool different questions may be seen through one of the slots. Each spool is provided with an operating knob on each end with an answer to any question being visible by turning the housing over etc.</p> |
