A drafting tool many students already have is a simple plastic protractor.  Protractors are instruments that measure angles.  Students will need a protractor that can measure at least to the nearest degree.  Triangles should be used to lay out lines in 15° increments; otherwise, a protractor can be used.  A discussion on angle measurement is included in a later chapter.

Even student protractors should be able to read to the nearest degree.