As I read the drawing the scale length end points are unclear and possibly incorrect. As I understand things the nut is not included in the scale length, and the nominal scale length starts at the nut end of the fretboard and ends at the nominal mid point of the saddle (at the crest where the string first touches the saddle). Compensation tends to add a few mm so (in reality) the saddle is usually positioned slightly beyond the nominal scale length - well that works for me when I reattach bridges. I think it would be better if you described your scale lengths as nominal and common, as JC very rightly says scale lengths do vary. Sorry if I’m raining on your parade, but you did invite constructive comment.