Absolute positioning of staves and measures

[Urs Liska]

Hi,

is it possible at all to create a layout with absolute positioning of
the score structure?

I.e. I would like to be able to position the staves absolutely and set
an absolute width of each measure. It would be enough to have a score
with one staff or rhythmic staff alone.

The idea is to create a LilyPond score that is overlaid over a scanned
score.

Any ideas?
Urs