?I don't
know of an automatic tool, but PCB (http://
pcb.gpleda.org/, for
UNIX platforms) can display a PNG file in the ?background of the board
layout for tracing purposes.
? With **milimetric precision**???
Does it matter? If the PCB layout app displays a grid, just scale the
scan until so pins match. Place components, trace the, uh, traces, and
back-annotation should net you a schematic, to boot. That would come
in handy for redesigning around replacements for discontinued parts.
.tsooJ