HARP line tool

We will call the longest string of this HARP the Harp Line .

We can imagine smaller harps with one long string or just smaller strings as representing smaller (younger?) statures. The string is always = 1 stature, but stature has a sub value (cms etc.). In many ways this is akin to radian measure except that the harp line is straight and not the wheel's perimeter arc curvature length.