| 摘要 |
<p>In order to realize an easily constructed and permanently operative monthly calendar with date lines which are correct for the day of the week, the calendar being designed to be as flat as possible, especially when used as a visiting card, a flat element, which is movably arranged between two further flat elements and is provided with transparent numbers and index figures, is moved in such a way behind a window of the flat element located at the front that, in conjunction with signal colours arranged behind the movable element, seven monthly calendars are produced, each able to be shown in two colours. An index displayed in the front region of the calendar can be set, in combination with an index review belonging to the calendar, for a number of years, for each month as applicable. As a result of the invention it is possible to produce flatter and permanently operative calendars, of a handy size as well as in a wall-size format. The number of necessary parts can be reduced to two.</p> |
