| 摘要 |
A device for displaying indicia is provided comprising: (a) at least one cover member having at least one visual display means on at least one surface thereof; and (b) at least one display member slidably movable by gravity with respect to at least one of said cover members within a predetermined area underlying said cover member, said display member having at least one prepositioned indicium on at least one surface thereof, said indicium registering with at least one of said visual display means, whereby said display member slidably changes position with respect to said cover member under the force of gravity in response to rotation of said device in a substantially vertical plane to change the registry of said indicium with respect to said visual display means. In preferred embodiments of this invention a perpetual and yearly calendar is provided.
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