Measure from center of grease cap to center of axle/castle nut. That will be more precise. And remember rear toe is measured off each wheel but also with respect to car center line, which is called thrust angle. After rear ride height(camber) and toe/thrust angle are set, then set front camber, then finally front toe.
You can align a Spyder with a tape measure and a carpenter's square.
And may I suggest less poems/song lyrics would result in more checks off the list? LOL!!!!