Course angle meter 360 degrees plastic 126mm transparent. Easily order online or buy the heading angle meter in our store. Fast delivery and excellent price. A heading protractor is divided into 360 parts (degrees). A right angle is 90 degrees and a complete round is 360 degrees. You indicate degrees with the following sign: o. From north to east, just like from straight to the right, is a right angle and then you make an angle of 90o. You set the direction (course) with a heading protractor. With a heading protractor you can also measure the angles of objects and buildings. A protractor only goes up to 180 degrees and is fine for measuring or drawing an angle, but a heading protractor goes all the way around (360 degrees). Product details: Transparent, A heading protractor works with a subdivision in 360 degrees and consists of 2 rotating discs. This allows you to determine or plot the course. You can also measure angles of buildings (a normal angle, an obtuse angle, an acute angle or a straight angle).