Answer my own question:
http://www.yadro.de/dro/scale-debugging.html
They had upgraded and added to the site so much that my bookmarked page
didn't look fmailiar.

RoyJ wrote:
Someone posted a writeup (late '05???) on hacking into a digital caliper
to get a data output. I thought I bookmarked it but searching was to no
avail. Anyone got a link?