Sighting is done by holding up a pencil, pen or ruler at arm's length to the object being drawn. Measure the height of the subject along the pencil and still at arm’s length compare it to the size of ...

Sighting is done by holding up a pencil, pen or ruler at arm's length to the object being drawn. Measure the height of the subject along the pencil and still at arm’s length compare it to the size of ...