Tide Movement with 3 3/8 in Clock Hands and 3 3/8" Black Tide Indicator (Dials up to 1/8 In. Thick) These quartz movements are specifically designed to give you an accurate reading of the rise and fall of the days tides. Based on lunar day of 24 hours and 50 minutes, these American Made tide movements use a standard hour hand to display the daily tide activity. Now available in two popular shaft lengths, our tide movements can be used with our 6" or 7-7/8" aluminum tide dials, or with a tide dial of your own design Dimensions: 2 1/8" W x 2 7/8" H x 1" D Price includes one set of 3 3/8 inch hour and minute hands and one 1 5/8 inch red indicator hand shown below. Clock hardware is included.