Yeah, that's who I had in mind but didn't want to drum up a controversy. I don't really care about the who and how, just the where.

I forgot to mention that in the late 1960s or early 1970s, NGS(National Geodetic Survey - http://www.ngs.noaa.gov/ ) needed several of the best level surveying instruments, which were at the time made by Zeiss in Jena, or off components made there. The U.S. government couldn't deal directly behind the iron curtain so an indirect channel was established because the U.S. did purchase the instruments and I have used them. I posted this on some lengthy thread I'm sure but this reveals that there were exceptions to the rule.

Kind Regards,

Raimey
rse