[texhax] Extract equations as EPS from larger doc?

[Philipp K. Janert]

For a (non-LaTeX) publishing project I will have to 
provide equations as images.

I would like to use LaTeX to set the equations and
to generate the image files (as EPS).

The main problem is the document management -
it would be nice to be able to have a single LaTeX
document, and ideally a clever tool that extracts
equations as individual EPS files.

Since this seems like a recurring problem, I wonder
whether somebody knows of a LaTeX macro package
or other tool that facilitiates this process. I looked on 
CTAN, but did not find anything that seemed suitable.

(I can do this manually, by placing each equation
on a separate page and then operating with ps2eps,
but I was wondering whether this problem has already
been solved in a more general/convenient way.)

Any suggestions?

Best,

		Ph.