Kangaro plastic route angle calculator instrument 126mm transparent

* A course angle calculator instrument operates with a 360-degree subdivision and consists of two rotating discs. * It is used to determine a course. * Place the course angle calculator on your starting point, turn the north arrow (0 degrees) to the north, and turn the red line to the point you want to measure and read the course. * You can also measure building angles (a standard angle, an obtuse angle, an acute angle, or a straight angle).