Help me with a geometry (I think) equation

Hey, this is fun! I just get a blank page when I hit CCG’s link so I can’t tell if that’s right. You’re also right, in that it’s a valueless guitar, refinishing and skulpting the neck are how I’m delaying the probably inevitable purchase of an expensive replacement. But 2" is rather wide for a guitar neck most are 1 11/16", my Gretsch is 1 3/4" and my nylon will be 1 4/5" or it’ll be in a dumpster when I’m done. thanks all, I thought this would be an easier exercise than drawing it out on paper!

What the heck is a “dimension” in this context?

Okay, never mind.

-FrL-

Doesn’t the diagram make it clear?