| 摘要 |
The present invention relates to a sundial arrangement comprising a screen portion provided with several slits allowing the passage of a narrow flat beam of solar rays and angularly spaced from one another to be successively traversed by the beam; a dial with several hour graduations; and a control circuit for bringing into operation a system of devices for filling containers, each representing a predetermined elapsed duration when filled up with water every time a slit is traversed by the beam of solar rays at a precise hour.
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