C-thru P-72 Course Protractor Plotter Ruler - 15"

P-72 Course Protractor Plotter Ruler - 15"

Transparent plastic course protractor plotter is designed to measure courses and bearings on charts and plotting sheets.

Use for drawing a course or bearing from a given point, moving a line parallel to itself or plotting celestial lines of position.

It has scales 1:40,000 and 1:80,000 in both nautical and statute miles.