"RST Engineering" wrote in message
...

Rich, there ought to be a little tweaky either on the rear of the OBS case
or by removing a knob and finding a hollow shaft for a long, tiny
screwdriver. Find your appropriate ground checkpoint using (as the fellow
suggested) the AFM and tweak it in. Save yourself a few tenths of an AMU.
However, you are merely adjusting, not CALIBRATING, which requires a
certificated repair station.

Aha! Yoost like de compass, you betcha. . .

I don't suppose there's anything one can do as easily for the bearing
displayed on the digital thingy.

Thanks, Jim

Rich S.