I've picked up one of these beasts, of unknown condition.
It looks clean but from using them years ago I know they
need some attention every once in a while.

Anybody have a line on the old paper manual? I will pay
any duplicating / scanning costs. There seems to be no
mention of the old models at Thermonics' web site and
the only search "hits" I get are at shady internet sites
that sell you other peoples' documents "for free, just
give us your credit card info "for verification" " (yeah,
right).