[MENTION=18039]geoffs[/MENTION],

That's a very impressive and precise methodology you all have there.

"Back when" we used a "build sheet" for every frame-up bike build detailing the frame make/model size/dimensions and component list.
All sizes of components from crank length through toe clip size were recorded from a pre-build fit assessment of the customer.
On the build sheet seat height/rail position, drop and reach etc were recorded from the "base fit" before the customer left the shop, and discretely marked.

It certainly is possible to duplicate a fit from bike to bike with carefully recorded data, your process makes our old school method look primitive.
Anyone who is satisfied with their fit would do well to use your methodology to record their fit data for future builds.

-Bandera