Douglas Metric Protractor

The Douglas Metric Protractor combines the functionality of a protractor and a parallel rule in one practical navigation tool. Measuring 125 mm square, it is supplied in a durable, reusable cardboard sleeve for convenient storage and protection.

The Metric Protractor enables users to plot and read courses and bearings, calculate departure and latitude between two positions, determine magnetic courses, and fix graduations in 1° increments.