Trintec Time & Tide Clock
Dimensions are 10" in overall diameter, with an imprint area of 9" diameter, with 2" depth. Crisp, clear, easy-to-read numbers.
Large red hand indicates the current tide. Time & Tide calibrated on the North American East Coast lunar tide cycle.
Tide clocks can be used wherever there are semidiurnal tides. On the Atlantic Coast of the United States and Canada the tide clocks seldom need adjustment. On the Pacific side of North America, including Hawaii, they can be calibrated to different coastal locations with special setting tables but they must be reset once a week on Saturdays to be accurate. This is because the Pacific tides are mixed semi-diurnal south of Alaska’s Yakulat region all the way to Central America. Tide clocks will not work in the Gulf of Mexico.