| 摘要 |
The tide time indicating device is comprised of a first indicator for the periods of Spring Tides, Neap Tides and intermediary periods comprising a first rotary element turning at a speed of one revolution in 59 days, such element having either a mark (25) passing in front of a fixed graduation (27) or a graduation passing in front of an index or behind a fixed window; a second indicator giving the time remaining before a High Tide or a Low Tide as a function of the period of Spring Tides, Neap Tides and intermediary periods comprising a second rotary element rotating at a speed of one revolution in 12 hours 25 minutes and 40 seconds, said second rotary element having either at least one mark (37) passing in front of a graphic assembly (35, 36) representing the time remaining before a High Tide or a Low Tide as a function of the period of Spring Tides, Neap Tides and intermediary periods, or at least a plurality of adjacent marks, each corresponding to one period, and passing in front a concentric circular time graduation, or a plurality of concentric circular time graduations, each corresponding to one period, said plurality of graduations passing in front of a fixed mark or behind a fixed window. |
