Nautical Slide Rule

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Solve speed, time, and distance calculations quickly and accurately with the Nautical Slide Rule. Designed for professional and recreational navigators, it converts between statute miles, nautical miles, and even yards when speed is given in knots. Immediate speed/time/distance solutions for common navigation problems Dual scales for statute and nautical miles plus yard calculations Easy-to-read markings for fast operation on deck or at the chart table Standard instrument in the U.S. Navy, trusted for reliability Compact 7-1/4 in (184 mm) square, lightweight at 0.3 lb (138 g) Add this proven time speed distance calculator to your navigation toolkit for dependable results. Show more