Yachting Brass Tide Clock
Usually Ships in 2 to 3 Business Days
Calculations necessary for compiling official tide tables are usually done by computer. This tide clock does not claim to give the exact time of each tide at a given place, but will give the average time - which is all that's necessary for the average person planning to go boating and fishing.
The primary motivator of the tides is the moon. The average duration between two transits of the moon around the earth is 24 hours, 50 minutes, and 30 seconds - this is referred to as the "lunar" or "tidal" day. Your Tide Clock has four hands - The tide indicating hand, running 50 minutes late every 24 hours, and thus indicating the average times of tides at given points. Then there are the usual hour, minute, and second hands.
Set the tide hand by using the wheel at the back of the clock. The exact time of the next high tide can be obtaining from official tide tables in your area, from the harbour master, or weather channel. As a general rule, the best time for setting the tide hand is at high tide during a new or full moon. If set this way, your tide hand should not need to be adjusted again. (West coast locations may require additional adjustments)
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