MARINE TIDE CLOCK A tide clock allows you to see the state of the tide at a glance ! It tells you whether the tide is coming in, going out, and the time remaining before high or low tide. Handmade in France, with a natural beech frame, white hand, and mineral glass face. ❌ IMPORTANT In California and in the Gulf of Mexico, tides are diurnal or mixed, making tide clocks products inaccurate in these locations.