Emacs scale generator?

[Dan Espen]

Okay, I've needed this more than a few times and Google isn't helping.
I write and design a lot of fixed format data and I need
layout scales like this:

1...5...10...15...20...

Anyone out there ever write anything like this?
Ideally I'd like to be able to do something like:

Esc 80 M-x scale

and get an 80 character long scale.
Up into the 100s for extra points:

95..100..105

-- 
Dan Espen