But does your Dad call himself an "arpenteur"?

No. But the definition only says "land surveyor" rather than naming a particular subcategory that is obsolete. I was just arguing that the general profession of land surveyors is still around, for sure! And sadly thinking of how odd it is that it was named in this thread, since he's been having many days in the last few years where he's certainly felt obsolete...poor fella...

In Québec he might be called an arpenteur. In Italy he's called a "Geometra" (JOH-meh-trah) and it's used as a prefix to his last name, just as we use "doctor". I love the Italian word for it - when you hear it, there's no doubt that his job is to measure things!