The Nautical Slide Rule offers a foolproof immediate solution to all common speed/time/distance problems and is convertible to statute or nautical miles.
Immediate solution to all speed-time-distance problems. Equally applicable for nautical or statute miles. Speed in knots or mph; time in hours, minutes or seconds; distance in nautical or statute mils "-or yards if speed is in knots-. Easy to read and accurate. Standard issue for U.S. Navy. Lifetime warranty.
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