Measuring bikes is hard! Measuring bikes is hard.  There always seems to be some bit in the way of what you want to measure.  A lot of the desired measurements are from or to the centre of something.  It can be difficult, if not impossible, to determine the exact centre of a complex shape.  Parallax errors can cause problems too.  It’s just plain hard to get exact, or even repeatable inexact bike measures. So why does this [...]