APR's DNPR-13 New Rotatable Azimuth Navigation Plotter with protractor scales has fourteen sawtooth color-coded nautical, statute, and terminal area scales for Sectional, WAC, and Terminal Charts. PVC plastic.
Dimension: 13 5/16" x 4 1/2"
Features
Accurately measure course lines
Plot intended flight course lines
Clear tinted center panel
Solve off-course problems
Determine bearings to and from
Plot true and magnetic north lines
Establish flight plan check points
A Sectional Chart side and a WAC Chart side
Easy conversion of statute to nautical miles, or vice versa
Superior for use in the cockpit at night
Creative color graphics for easier plotter use
Sawtooth graduations for statute & nautical scales