Douglas Protractor 10 IN Plastic Square Map Marking Protractor
This Douglas is a well know and widely used navigation protractor in the marine environment. This version is manufactured to our usual high standard so you know it will be ready when you need it to be. These protractors are digitally printed on the underside of 1.5mm thick plastic to avoid parallax error. They are then laminated with 15 micron to ensure the image is totally waterproof, scratch resistant, and UV stable for many years. They are then laser cut to an accuracy of +/- 0.25 mm.