Protractor Triangle

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This protractor triangle is a reliable tool for precise marine chart work and classroom navigation training. 7.75" legs with 11" hypotenuse for easy alignment on standard charts Pr otractor scale enables quick plotting of courses and bearings in any direction 90° angle simplifies determining lines of position and perpendicular references Clear, durable vinylite construction ensures long-lasting accuracy and readability Lightweight design (0.14 lb / 63 g) for convenient use at the chart table Backed by a lifetime warranty for long-term professional confidence An essential, no-nonsense plotting instrument for every navigation kit. Show more