Topcon FC-2000

In a tote in my office, I have found an old Topcon FC-2000 collector.  It has TopSurv 7 on it.  Looks like there is a small crack in the screen.  It has the collector, the bracket to connect to a quick connect on your plumbing pole, and the charger.  No manuals (I’m not sure it came with a paper copy of the manual).