I'm not sure I follow your logic. Everything is new here, wheels , frame and swing arm from where do you start a measurement?
Ok re thinking and editing. you are using a known length to extrapolate to the whole length in the picture. Have you tried this on a known bike like your current Rocket to determine accuracy?
Phar2slo and I did a measure...it's shorter...he has a gizmogoozamawhacker at work that measures accurately...can't remember the exact length ..but it is shorter..