| 摘要 |
A time and tide calculating device for wrist watches clocks and calculators that register the tides and the time of the tides, comprising rotatable concentric tide and calendar discs placed adjacent to a clock face for indicative registration and cooperation with time telling devices, having various arrangements of said tide and calendar discs showing tide positions and the calendar date in registration with clock and watch faces that also include digital information on day, date and the AM or PM by the development of new clock works to rotate such information required for telling the date, the time, the AM or PM, the tide and a reference on said calendar disc responsive to showing the state of the tides in advance for the following days of a calendar.
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