Originally Posted by
jnfr
aah! I see! Thanks for explaining the two numbers, caloso!
The confusing thing for me is when you start to consider that the headtube is not straight up and down; typically, it's at 15-17 degrees from vertical. So, you may see stems labeled as 17 or 73 degrees. When installed, they allow you to have a stem that's more or less parallel to the ground.