At RAIG we offer you old tidal measuring instruments so that none of you are caught off guard:
Knowing the state of the tide before going sailing was and is very useful for lovers of the immense sea. According to the height of the sea water in the tidal cycle, we can speak of high tide (highest height) or low tide (lowest height), being the tide that change that periodically occurs at sea level by the force of attraction exerted by the Sun and the Moon on Earth.
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