Originally Posted by
jamesdak
...Now measuring the tube lengths and wheelbase is easy enough but getting the angles accurate is another thing in itself, LOL!
I just like knowing to try and figure why a bike "feels" like it does.
You can buy digital protractors/angle finders. You put it on the top tube and zero it, then put it on the seat or head tube and it will display your angle. Sold at many hardware/automotive stores and online.
https://www.aliexpress.com/item/Elec...28015726.html#!